I believe the answer would be C, its. Its is used to describe something that's connected to an animal or an inanimate object.
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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From the definition of absolute phrases we know that it is a modifier that attaches to a sentence without a conjunctution. So, we can say "his chubby legs, pumping" is the correct answer.
The pronoun for the sentence is D.object
Glad to help you ^-^
Where is 3 and 4? there are no questions