Are their suitcases in the trunk?
Answer:
B. It introduces a new central idea to focus on.
Explanation:
I say this but I didn't read the passage, so excuse me if I'm wrong. It doesn't seem to be A, sense it isn't contrasting a statement. It really could be C as well, but this seems to be something it would focus on. It could not be D because it is not a concluding sentence, it would leave the passage in an awkward state. This is why I say B.
Answer:
My house is bigger than yours.
Your grade is worse than mine.
The Pacific Ocean is deeper than the Arctic Ocean.
You are more polite than Joey.
My brother is taller than I am, but he is older too.
Just write about if you would make it warmer colder, how often would it be warm or cold