Official ExplanationThe first word is defined in the sentence as a device useful for
“inciting and guiding discovery.” That’s one of the meanings of
“heuristic,” which is the correct answer. A
“literary device” is a common expression and so sounds good, but the meaning is wrong because a
“literary device” is a technique used in writing to produce a specific effect. An
“allegorical” (symbolic or metaphorical) device is a specific type of
“literary device” and so doesn’t work either. If you are not meant to take the
“model of the psyche” as a guide to the physical structure of the brain, then you want a word that means something like show or depict for the second blank.
“Represent” is the closest choice. The word
“dictate” is incorrect because a model of the brain doesn’t determine the physical form of the brain.
“Ameliorate” (make a bad thing better) also does not fit the desired meaning.
Answer: A,F