Answer:
B, C, and A.
Explanation:
B because the independent clauses "The rain stopped" and "the sun came out" must be connected using a conjunction (in this case, and). Row is primarily used in other contexts, such as rowing a boat. In this sentence, we use to word rode to display the action of riding a bike in past tense.
C because the past tense of "fly" is flew, and a question mark mustn't be used in this context. Did the days turned gray? is a case where you can actually use a question mark to indicate a question.
A because but is supposed to have a comma before it every time it acts as a conjunction connecting two independent clauses together. B is not chosen as there are two conjunctions in the sentence, which is grammatically incorrect. A sentence may only have a single conjunction used to connect two clauses, or phrases, together.
