Answer:
I have so much homework, and I still have to learn this piece of music,
Explanation:
In the given sentence, two independent clauses are to be joined or taken into a single sentence. And to make it into a single sentence, the two clauses are to be joined by a comma followed by a coordinating conjunction.
Accordingly, as the clauses present the two tasks that needed to be done, the correct coordinating conjunction for the two clauses will be "and". This allows or equalizes the importance of the two clauses, at the same time bringing them together in a single sentence.
Thus, the final correct answer is the second option.
