I believe none of these options are correct. However, if you had to choose one, I would pick A - <span>Nina slid into her seat just as the bell rang and tried to catch her breath.
B, C, and D are incorrect because these are all examples of direct characterization, meaning that the other directly tells us what these people are like. This doesn't happen in A, which is why I would choose that option.
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Answer:
As he is speaking, he has a section of the book readily prepared as a reference.
Spilled over as of past tense?
Choice B) My sister bought a green cotton sweater uses a transitive verb.
Answer:
1) has / playing / is preparing
2) while I was doing homework, my mother was arriving home
