Rene bit his brother when they were playing. What did he use to bite him?

• A. His nails
• B. His teeth
• C. A toy
• D. A spoon

Answer: (B)

Biting is done with the teeth, so the thing used to bite is Rene’s teeth. The sentence describes him biting his brother, which means his teeth did the biting. Nails aren’t used to bite someone, and while a toy or spoon could be bitten, they aren’t what did the biting in this context.