Answer:
D. The Senator's fondness for media exposure proved to be his Achilles' heel in the end.
Step-by-step explanation:
An allusion is a figure of speech that references people, places, events, or other literary works such as mythology. They can be implied or directly stated.
A. We squirmed in our seats as a deafening silence followed the host's poor attempt at humor.
This sentence does not meet the definition of an allusion, so A. is incorrect.
B. If all the world's a stage, I must be the one who sweeps up after the show is over.
This sentence is a metaphor since it describes the world as a stage. A metaphor is not the same as an allusion, so B. is also incorrect.
C. Our annual family reunion is like a circus with a disproportionate number of clowns.
This sentence is a simile. The narrator uses the work "like" to describe his/her family union as a circus. This means option C. is incorrect.
D. The Senator's fondness for media exposure proved to be his Achilles' heel in the end.
This sentence meets the definition of an allusion. It makes a reference to a literary work, in this case the Greek hero Achilles. D. will be your correct answer.
I hope this helps you!