Answer:
Cupping a hand behind an ear to request more volume is an emblem (B) type of body movement.
Explanation:
Emblems are non-verbal body movements that have a verbal counterpart. This verbal counterpart can vary according the community, because not all non-verbal cues or emblems are interpreted in the same way in all places. In this case, the verbal counterpart would be "please, speak up" or "turn up the volume".
