I think it's B because she was too advanced for her class and told her not to read at home
Answer: the answer would be A
Explanation:
Show me the two sentences do I could answer
But is a coordinating conjunction. That's not the correct answer. (The) is not a coordinating conjunction. You use the acronym FANBOY for coordinating conjunctions.
F-for
A-and
N-Nor
B-but
O-or
Y-yet
so (the) is not a coordinating conjunction
I hope this helps :)