Brain ! which of the following lines creates a natural pause by using a comma correctly? "i, uh, am confused. weren't we leaving at noon? " asked carla. "let’s sit over, watch out! " yelled bianca as the frisbee passed over nawal's head. " for packing my ham and cheese salad, ew, it's filled with sand! " shrieked lara. "i don't know what happened, suddenly the beach umbrella, was gone! " exclaimed ned.