C) Going paperless may come with many challenges, but its benefits can outweigh the cost.
The passage begins with the fact that "going paperless" will save the schools money and the environment. This detail includes the benefits of "going paperless". The paragraph goes on to list a few of the challenges: equal and fair access to technology and students and teachers knowing how to use computers skillfully. The conclusion statement should summarize these points as well as connect them to the essay's overall purpose. Option C does this by stating the benefits can outweigh the cost. The other options are also not correct because many of them are irrelevant. Option B does not conclude the paragraph; instead it introduces another way to help the environment. Option D switches from a formal tone to an informal tone by switching to first person point of view. Option A speaks about energy which is also a knew idea.
A) indicative mood
Enjoyed is the only verb in the sentence. It is written in the indicative mood. The indicative mood is used for factual statements. Sentences in the imperative mood are commands. The conditional mood often has the word IF and talks about hypothetical situations. The interrogative mood is used for questions.