The verb used would be ‘is’ because we’re talking about a group of people in the present tense. I feel we would use ‘are’ only if there were specific things were were talking about, like [we] are, [you] are, [jack and jill] are, etc. Though, this wouldn’t be the case with he and she, because they always need to be in present tense.
The answer to this problem is B: dialect: sociolect.
Answer:
My choice would be D
Explanation:
A and B are more directed towards the teachers and principles and it’s definitely not something that would grab a teenagers attention, and C seems like something that would be pitched at a parent teacher meeting or a meeting with the towns Mayor. D is something teenagers would actually think about for more then a second.