Answer:
Conduction is the word you need
Answer:
The same person before to blood if you have a brother and sister to sure when people have blood it's hard for its .
It depends on your teacher, it should be A. It could be B if that’s what your teacher wants but I would go with A.
I might be wrong but I think C ( what the wave it traveling through). I think C because a wave medium is the substance that carries a wave (or disturbance) from one location to another. The wave medium is not the wave itself and it doesn’t make the wave. It just Carries or transports the wave from its source to other locations.