Answer:
a. Juanita and Justin Only.
Explanation:
The two members seem prepared and supportive for the discussion. The two members who are prepared and support the discussion are Juanita and Justin. Only these two members of the team favors the discussion and understands the point of discussion. They were part of a team who had more than 5 members. Only Juanita and Justin supported the discussion and rest of the members opposed the ideas presented in discussion.
You have to compare to teacher to something else like: "My teacher is as sneaky as a fox" ; Something like that.
I would say C because this passage talks about green building and how it's beneficial. Sentence 4 mentions about what the green roofs are made of and I don't think that would be necessary to include in this passage.
The subject of a text is the primary topic, idea or content that is discussed within the text.