Answer:
A as they used they used if while the others are fact
Page 2? part 2? what is p2 on? like what is the context around it?
Answer:
The waves move outwards from where the rock hit. When the waves pass the wood, it bobs up and down. In the case of the falling dominoes, the movement of the dominoes was in the direction parallel to the movement of the wave, longitudinal.
Explanation:
Hope this helps :D