Your marriage will be a complete disaster
This is a theme because it is a concept NOT the story line. A plot summary is basically the story line as if you were writing a summary of the book or story.
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.
Slave owners thought of slaves as equipment they took care of them but showed no compassion and when the “equipment” didn’t work it was there fault and not the owners