The answer is C, it has 3 parts as opposed to 2. (compound)
Mr. Jones woke up and shot his <span>shotgun and the pellets hit the wall, scaring the animals and ending the meeting. </span>
Although you gave no context, comprehensive usually works as an adjective to mean something was complete and conclusive.
<em>(context) Those sources are comprehensive. </em>
destroy or damage (metal, stone, or other materials) slowly by chemical action or destroy or weaken (something) gradually
It is a verb so you can use it to describe a process in which something is being destroyed
