David Setran said that this activity is most productive in helping emerging adults remain faithful to his or her beliefs through this stage of life:

Realignment of Priorities (what do you love)

Explanation:

In the book titled "Spiritual Formation in Emerging Adulthood: A Practical Theology for College and Young Adult Ministry" which focused on the spiritual construction of today’s young adults.

It was concluded by David P. Setran, that, Realignment of Priorities (what do you love), is the activity which is considered the most productive in helping emerging adults remain faithful to his or her beliefs through this stage of life.

Hence, the right answer is "Realignment of Priorities (what do you love)"

answer; a cost benefit analysis;