Which sentence from "Broken Chain" best expresses a theme related to working towards a goal?

a. "Last week he did fifty sit-ups a day, thinking that he would burn those already apparent ripples on his stomach to even deeper ripples, dark ones, so when he went swimming at the canal next summer, girls in cut-offs would notice."

b. "He liked the way Prince looked-and the bass player from Los Lobos."

c. "Their family ate a lot of frijoles, which was OK because nothing else tasted so good, though one time Alfonso had had Chinese pot stickers and thought they were the next best food in the world."

d. "Alfonso knew better than to say anything when Ernie looked mad."

The sentence from Broken Chain that best expresses a theme related to working towards a goal is A: "Last week he did fifty sit-ups a day, thinking that he would burn those already apparent ripples on his stomach to even deeper ripples, dark ones, so when he went swimming at the canal next summer, girls in cut-offs would notice."

Explanation:

This sentence from Broken Chain is the only one that shows how someone works, makes an effort, in order to reach a bigger goal. The character mentioned in these lines is doing fifty sit-ups per day, during the whole week, in order to look good for girls next summer. He is working hard to burn "apparent ripples on his stomach". He works (does fifty sit-ups) towards a goal, which in this case is to burn those ripples to look good for girls in cut-offs the following summer.