Answer:
Convey details about the characters
Step-by-step explanation:
In the excerpt from, "It's Our World, Too!: Young People Who Are Making a Difference", the author's purpose was to convey details about the characters. He first made a description of Andy Percifield describing his physical features ( a tall, red-haired senior), his duties ( which involved reading announcements in the morning over the Public Address system), and his personality ( he was smart and fair).
Neto was described as a student who sought help for Mexican players who were being bullied. Neto met Andy Percifield for help and Andy promised to help him.