Which tracking capability helps marketers assess user interactions throughout the app journey?

The correct choice focuses on critical interaction testing as a method that enables marketers to assess how users interact with various elements throughout their app journey. Critical interaction testing involves setting up tests to specifically monitor key interactions and engagements within the app. This allows marketers to gather insights into user behavior during specific tasks or moments, ultimately helping them understand which aspects of the app are working effectively or where improvements may be needed.

By analyzing these interactions, marketers can make data-driven decisions to optimize the user experience, enhancing retention and satisfaction. This targeted method aligns closely with assessing user interactions and refining the app journey based on actual user behavior. Other options do not focus specifically on assessing user interactions in the way that critical interaction testing does.