I would say C. “was”. It’s definitely not “am”, because that just sounds completely wrong. It’s not “are” because that sounds a bit wrong, too. It can’t be “were” because it’s only referring to one group, not many groups. The only answer it could be is C.
The answer to this question is false
<span>Topic, Illustration, Restatement
The first sentence indicates the topic at hand. The next two sentences demonstrate the use of sharp teeth. The last sentence is a restatement of the topic sentence.</span>