"Dad," Christopher said sadly. "I tried to help Jeannie ride her bike, but she fell off and got mad at me! Now she's in her room and won't come out. Should I ask her to come back outside to try again?" Christopher asked, very concerned about his sister.

"It's best to let sleeping dogs lie," Dad explained. "She'll come out of her room when she has calmed down and wants to give it another try."
What is the meaning of the idiom let sleeping dogs lie?
• 1. Stop being angry.
• 2. Let someone lie down.
• 3. Do not interfere with a situation.
• 4. Do not wake up someone who is asleep.

The meaning of the idiom "let sleeping dogs lie" in this context is option 3: Do not interfere with a situation. It means that it is best not to try to resolve or address a situation that may cause more trouble or make things worse, especially when someone is upset or angry.