Final answer:
Jem tells Scout that Boo Radley left their pants folded neatly on the night they were scared off from the Radley house, suggesting that he wants to be friends with them.
Step-by-step explanation:
Jem tells Scout that the night they were scared off from the Radley house, he saw their pants had been mended and folded neatly, as if someone knew they would come back for them. He also noticed that the pants were folded as if they were waiting for someone, which led him to suspect that Boo Radley had left them for them to find. Jem further explains that he believes Boo Radley wants to be friends with them and that he tried to communicate with them through this gesture.