question: metal, stainless steel and plastic are used to support what?
choices.text: Muscles in the upper arm. epithelial tissue electricity suspension bridges research and development The functions of life stone piles small fires
choices.label: A B C D E F G H
formatted_question: metal, stainless steel and plastic are used to support what? (A) Muscles in the upper arm. (B) epithelial tissue (C) electricity (D) suspension bridges (E) research and development (F) The functions of life (G) stone piles (H) small fires