I'm going for Musicians. Hope I got it right, and I hope this helps :P
The words that are missing in the sentence are The Second Great Awakening and moral renewal. The so-called Second Great Awakening is referring to revival of religious during the early nineteenth century, where the preachers are advocating or sharing the message of spiritual and moral renewal to people.
I think the answer is diminishing marginal utility
Answer:
The answer is "brief stimulus assessment".
Explanation:
It is an insight into the perceptions of a person that triggers a response or even a reaction, which is used in conventional training, as well as, another behavior testing. Or it is a set of several methods used to assess whether or not one or even more stimuli can act to accelerate the amount from a certain behavior or activity afterward.