Hello!
Let's go through the given choices to find which word is a synonym for knocking.
A. Rapping means to strike something, specifically hard, loudly, to attract attention.
B. Ticking means to make sharp, short movements like a clock does.
C. Thundering means to make a loud, deep noise.
D. Popping means to make an explosive sound.
Therefore, the answer is A, rapping because knocking is striking a surface to get attention, which is similar to rapping.
Answer: Hail falls for at least 30 minutes everytime.
Explanation: It takes this long because the updrafts in hail take a while to produce and a long time before it ends.
The correct answer is C.
Answer C is an example of circular reasoning because it begins and ends with the same idea. Basically, the statement is saying that the wolves should be protected because they need our protection. The two statements are the same; one is not proof of the other. This is an example of circular reasoning.
