Read the excerpt from It's Our World, Too!: Young People Who Are Making a Difference.

At 10:30, students from all grades packed themselves into the lab. Andy stood up and reported what was happening, then read his letter aloud and asked for suggestions to improve it. There were a few. Then he asked for, and got, the students' unanimous approval to have it read at halftime.

The author’s purpose in this excerpt is to

a. include facts and details about what it takes to bring people together.
b. create a suspenseful moment that prompts readers’ emotions.
c. encourage readers to do something about what they believe in.
d. describe to readers an environment where people work together.