A membranophone, it's sort of in the name. A membranophone is any musical instrument that produces sound with a vibrating stretched membrane. An idiophone is somewhat similar and produces sound by vibrating when hit but does not use strings or membranes (the instrument as a whole vibrates).
Answer:
C. As the NASA website explains, the planet Venus is very hot.
Explanation:
Well, it makes sense. If it isn't C, then it is definitely A.. but I doubt that.