|Question 3Verbal

Source Texts

Text
Studying wrappers from discontinued candies, cover images from out-of-print magazines, and posters promoting concerts by long-forgotten musicians may seem like a frivolous pursuit, but ephemeral objects like these are useful as ______blank cultural change, revealing shifts in norms, values, and concerns that traditional objects of historical inquiry may not.
Which choice completes the text with the most logical and precise word or phrase?
pretexts for
A
conjectures about
B
manifestations of
C
inducements to
D