To be honest, all of those sound applicable. But since there isn't an all of the above answer, I'd say your best bet is either A or D. <span />
Answer: The answer is the second option, “Why does the ball press inward
Explanation: I chose that answer because it seems to be the most relevant question to this topic and sentence. Also, the answer to the question would be the most beneficial if a scientists or somebody wanted to know more about this.
Hope this helps.
Answer:
The paragraph uses past-, present-, and future-tense verbs. It contains four infinitives.
