(I believe this is the answer. Hope it helps!)
Tells a story that can be real or fictional. Has characters and a plot. Has a beginning, a middle, and an end in chronological order.
Answer:
The first option
It may take me months, if not years, to train for a marathon correctly uses commas to offset a phrase in the sentence. So, the first option is the answer. Hope it helps!
The correct answer is subject-verb. The sun is the subject and exploded is the verb.