Musan Just Finished Presenting an Ethics Training Workshop to the Employees

Musan just finished presenting an ethics training workshop to the employees of a department at his company. Quite a bit of very important content was imparted, and some of the managers want to know how much the participants will retain. What is likely to be the best and most agreeable way for Musan to test this retention?

A) Give a follow-up web-based exam several weeks after the workshop.
B) Request written evaluations of the course by participants a month after the workshop.
C) Administer in-person, individual tests that involve a lengthy new bank of fictional ethics scenarios with participants a few weeks after the workshop.
D) Hold a group follow-up session with participants a few weeks after the workshop.