question: What does racing require?
choices.text: frequency tuning steam power A hinged joint Muscles in the chest backbones a lot of energy upper arm muscles
choices.label: A B C D E F G H
formatted_question: What does racing require? (A) frequency tuning (B) steam (C) power (D) A hinged joint (E) Muscles in the chest (F) backbones (G) a lot of energy (H) upper arm muscles