Question

a every morning, when i woke up, rex would greet me, wagging his tail. i would jump out of bed to feed and walk him. all this meant that i had more to do in the morning. but somehow i started arriving to school on time. after school, i would take rex outside to play. then i would sit down at the kitchen table to do my homework. with rex at my feet, it was just easier. i didnt realize it, but rex was teaching me something. i was building the habit of getting things done. my grades improved. i even started thinking about college.
b rex isnt around anymore, but i think about him every day. hes the reason i do what i do.
how does taking care of rex help john with his problems at school?
taking care of rex shows john how to get along with his teachers.
taking care of rex gets john to solve problems in new ways.
taking care of rex teaches john how to be a leader.
taking care of rex helps john become more responsible.

Explanation:

The text says taking care of Rex made John arrive at school on time, do homework easier, improve grades, and build the habit of getting things done. This shows responsibility. The other options: no info about getting along with teachers, solving problems in new ways, or being a leader. So the correct option is about responsibility.

Answer:

Taking care of Rex helps John become more responsible.