Please help multiple choice and brainliest

What was the role of the orchestra in an opera?

What is the value of an original etching by r h moore january 1886

Sarah and juan were running in the school track meet. the muscles in their arms and legs them run fast. other muscles that you cannot see were also at work. the most important muscles for this track meet were the muscles in their a) arms. b) eye. c) feet. d) heart.