Question 3

Explanation

The correct answer is 'Audience Engagement Over Time' because this report specifically focuses on tracking and analyzing the changes in the cross-channel customer population over a specific period, which in this case is the last 6 months. It provides insights into how the audience has engaged with various marketing channels such as email, social media, mobile, etc., and how their engagement levels have changed over time. On the other hand, 'Contacts Count' is a more generic report that simply provides the total count of contacts in the Marketing Cloud database. It does not give specific insights into audience engagement or changes over time. Similarly, 'Contacts Analytics' is a reporting tool that helps analyze data about individual contacts or segmented groups within the audience. While it can provide valuable information about contact behavior and patterns, it does not provide a holistic view of the overall changes in the cross-channel customer population. Therefore, 'Audience Engagement Over Time' is the most suitable report choice for the marketing manager to monitor and understand how the customer population has evolved and engaged with marketing efforts across different channels over the last 6 months.