"on the first day of"
That's the only answer that comes to mind.. I'm not entirely sure if there's more to the question
Parables & Fables.
If this isn't correct, then i'm sorry in advance.
Answer:
B) Nina is trying to raise her grade in American History from a B+ to an A.
Explanation:
The question asked for a present goal. Option B is the only one in present tense.