Read the sentence from “Broken Chain.” The next day he spent his lawn-mowing money on a new shirt and, with a pocketknife, scooped the moons of dirt from under his fingernails.

The descriptive language shows that

Alfonso's fingernails are white.
the dirt has a curved shape.
Alfonso gets very dirty at work.
lawn mowing is a profitable job

specific audience will understand the main ideas. for example, if you were writing an instruction manual for rocket scientists, it would likely look very different from one you would write for young children. your language, tone, and writing style would change significantly.

you stated "which of the following" but i don't see anything else

the first paragraph i did this and passed the test with 5 wrong