For question 1, I believe it is B.
For question 2, I think it is B too.
I might get this wrong tho.
Answer:
B
Explanation:
it is constantly gaining speed
B. Run-on because theres no stopping point on it. For example Flash flooding creates dangerous conditions, rain falls too quickly to be obsorbed into the ground or to drain.
The answer is B because convalesce means "to recover health and strength after illness" This is the only reasonable answer.