Question

while the fame of musical geniuses like mozart and beethoven endures for centuries, the idols of pop music quickly fade into
poverty
obscurity
disbelief
permanence

Explanation:

The sentence compares the fame of classical musical geniuses (endures for centuries) with pop music idols. We need a word that means being forgotten or not well - known. "Poverty" is about lack of money, "disbelief" is about not believing, "permanence" is about lasting, while "obscurity" means being unknown or forgotten, which fits the context of pop idols' fame fading.

Answer:

B. obscurity (assuming the options are labeled as A. poverty, B. obscurity, C. disbelief, D. permanence)