The person's activity log is the ultimate source of truth for all the information that happens over time for a person in Marketo Engage1.

To locate the activity log for a person, go to the Database, select All People, click the People tab, select a person Id number, and click Activity Log1.

The activity log shows all the activities that have occurred for the person, such as web page visits, email clicks, form fills, program status changes, etc1.

To find the source and reason for the Marketing Qualified date change, filter the activity log by the activity type ''Change Data Value'' and the attribute 'Marketing Qualified Date'2.

The filtered activity log will show the date and time of the change, the source of the change (such as a campaign, a sync, or a manual update), and the reason for the change (such as a trigger, a filter, or a flow step)2.Reference:1:Locate the Activity Log for a Person | Adobe Marketo Engage2:Marketo Lead Activity Logs: What They Are & How To Update - Iron Horse

Smart Campaigns are the engine of Adobe Marketo Engage that allow you to automate tasks and actions based on different criteria and triggers.

There are three types of Smart Campaigns in Adobe Marketo Engage: Trigger, Batch, and Recurring.

ATriggerSmart Campaign is a type of Smart Campaign that is listening for and automatically responding to a person's actions. For example, you can create a Trigger Smart Campaign that sends an email to a person who fills out a form, or adds a person to a list when they click a link, or updates a person's score when they visit a web page. A Trigger Smart Campaign has one or more triggers in its Smart List that define the actions that will activate the campaign. A Trigger Smart Campaign runs in real time and executes the flow steps immediately for each person who qualifies.

ABatchSmart Campaign is a type of Smart Campaign that runs once or on a specific date and time for a group of people who meet certain criteria. For example, you can create a Batch Smart Campaign that sends a newsletter to a segment of people, or cleans up your database by deleting inactive people, or changes the status of people who attended a webinar. A Batch Smart Campaign has one or more filters in its Smart List that define the criteria that people must match to qualify for the campaign. A Batch Smart Campaign runs at the scheduled time and executes the flow steps for all the qualified people at once.

ARecurringSmart Campaign is a type of Smart Campaign that runs on a regular basis for a group of people who meet certain criteria. For example, you can create a Recurring Smart Campaign that sends a birthday email to people on their birthday, or syncs people to Salesforce every day, or updates the lead source of people who come from a specific channel. A Recurring Smart Campaign has one or more filters in its Smart List that define the criteria that people must match to qualify for the campaign. A Recurring Smart Campaign runs at the specified frequency and executes the flow steps for all the qualified people each time it runs.Reference:

Understanding Smart Campaigns

Smart Campaigns 101: A Deep Dive into one of the most important Adobe Marketo Engage Features

Asingle opt-inprocess is when a person fills out a form and is automatically added to the mailing list without any further confirmation1.

Anautomatic opt-inprocess is when a person is added to the mailing list without their explicit consent, such as by pre-checking a box or by purchasing a product2.

Adouble opt-inprocess is when a person fills out a form and is then sent an email that requires a click to confirm the opt-in.This ensures that the person has given their permission and has a valid email address13.

Therefore, the correct answer is C. Double opt-in, as it matches the description of the scenario given in the question.Reference:

1:How to Set Up Double Opt-In (COI) - Marketo

2:Opt-In Email Marketing Benefits and Best Practices for 2024

3:Double opt in process - Marketing Nation

Demographic scoring is a type of person scoring that assigns points based on the attributes of a person, such as their job title, industry, company size, location, etc.1

Demographic scoring helps to identify the most qualified leads based on their fit for the product or service, and prioritize them for sales follow-up2

To score Vice Presidents as +10 and Executives as +20, the Adobe Marketo Engage professional would need to create a smart campaign with the following steps:

Define the smart list with the triggerData Value Changes, and selectAttributeasJob Title, andNew Valueasis anyofVice President,Executive3

Define the flow with the actionChange Score, and selectScore TypeasDemographic, andScoreasAddandChoice 1asIf Job Title is Vice President, then10, andDefault Choiceas204

Activate the smart campaign and monitor the results

1:How to build a lead / person scoring program | Adobe Marketo Engage2:Lead Scoring: Everything to Know About the Process Before, During, and After | Adobe for Business3: [Smart List - Data Value Changes | Adobe Marketo Engage]4: [Flow - Change Score | Adobe Marketo Engage]

Comprehensive Step by Step Explanation:

Segmentation is the process of dividing your audience into different subgroups based on their attributes, behaviors, or preferences1

Segmentation is the prerequisite for creating dynamic content, which is the ability to customize how different people see a landing page or email based on their segment2

To create dynamic content, you need to first create a segmentation in Marketo Engage, and then define the segments and the smart list rules for each segment3

After creating a segmentation, you can add dynamic content blocks into your landing page or email, and select which segment will see which version of the content4

Dynamic content helps to deliver more relevant and personalized experiences to your leads and customers, and increase engagement and conversion5

1:Segmentation | Adobe Marketo Engage2:Understanding Dynamic Content | Adobe Marketo Engage3:Creating a Segmentation | Adobe Marketo Engage4:Adding Dynamic Content to a Landing Page | Adobe Marketo Engage5:Marketo Engage: Content Personalization | Adobe for Business