If an astronaut popped a balloon in the vacuum of space, would his partner hear it? A.
Yes, the air expanding out of the balloon as it popped will transmit the sound waves to his partner.

B.
No, there no medium through which the sound wave can be transmitted, therefore; there is no sound in space.

C.
No, the pop of the balloon is not loud enough to be heard that far away.

D.
Yes, the sound waves will first be transmitted through the astronaut's body and through his partner's body.