Answer: Sentences 3 and 5.
Explanation:
"Dr. Heidegger's Experiment" is a short story written by Nathaniel Hawthorne, centered around a doctor who is convinced that he received a particular kind of water from the Fountain of Youth.
In this excerpt, Dr. Heidegger and four people have lost their youth. They drank water which made them young only for a short period of time. Although four people are sad over their lost youth, Dr. Heidegger is aware now that they should be careful what they wish for, as they just might get it. In Sentence 3, a woman wishes to die because she cannot look at her skinny and wrinkled hands. She cannot stand the fact that she is old.
In Sentence 5, however, it is seen that Dr. Heidegger takes a different perspective on this issue: he believes that they should have never got their youth at all.
These two sentences reflect the central theme of the passage, but explore it from a different perspective.