HURRY ASAP PLEASE 
 First Read: Concept Vocabulary
 Identify the choice that best answers the question.
 In which of the following circumstances would a person's voice most likely be muffled?
 OA. if the person were singing in a concert
 OB. if the person were speaking calmly to a friend
 OC. if the person were wearing a scarf over his or her mouth
 OD. if the person were making an announcement over a loudspeaker