Question

the author uses the phrase \waxed and waned\ (line 24-25) to refer to how:
a compelling performances and narratives over strictly fair competition.
b the careers of famous wrestlers plummeted.
c the popularity of bolivian lucha libre fluctuated.
d the popularity of bolivian lucha libre increased steadily.

Explanation:

The phrase "waxed and waned" means to increase and decrease in strength or popularity over time (fluctuate). Option A is about a comparison between performances/narratives and fair competition, not related to fluctuation. Option B says careers plummeted (only decreased, not fluctuating). Option D says popularity increased steadily (no decrease, so not waxing and waning). Option C states the popularity of Bolivian lucha libre fluctuated, which matches the meaning of "waxed and waned".

Answer:

C. the popularity of Bolivian lucha libre fluctuated.