Bret admired the toy garage he had built for his brother. However, he noticed that one wall did not fit tightly against the roof of the garage. He knew he would have to reinforce the spot where the wall met the roof. Bret added more glue to the area and felt certain this adjustment would
make the garage sturdy enough to stand up to the rough playing it would receive from his little brother,
What does the word reinforce mean in the passage?
1. move slightly
2. take or pull apart
3. examine carefully
4. fortify or make stronger