The tale of Professor Larry Foster and his grade book filled with Fs was told by one generation of faculty to the next with a mix of envy, awe and delight. If there was one thing you could be sure of, there was no grade inflation in his department, whose culture was formed primarily by .
O Critical incident. O Reward system. O Environment. O Rules and procedures.

Critical incident

Explanation:

The tale of Professor Larry Foster and his grade book filled with Fs was told by one generation of faculty to the next with a mix of envy, awe and delight. If there was one thing you could be sure of, there was no grade inflation in his department, whose culture was formed primarily by Critical incident.

A critical incident is any unplanned event which takes place during the class. In other words, incidents happen but critical incidents are created because of their importance, teachers can critically analyze any of their lessons and can make a particular event critical by reflecting on it.

did mary wollstonecraft believe was a natural ingredient for women’s happiness?

so you should go with

a. strong