Answer :
Answer:
A). Change the phrase "Schachter-Singer" to the phrase "Yerkes-Dodson."
Explanation:
In the given phrase, the change that should be done to make it true is that replacing the phrase "Schachter-Singer" to the phrase "Yerkes-Dodson" as it would propose the appropriate sense to the passage. The phrase "Yerkes-Dodson" is appropriate to the context of the passage instead of "Schachter-Singer". Thus, option A is the correct answer as it correctly replaces the incorrect word with the correct one.