The answer to your question would be that the revision that effectively corrects the fused sentence is the following one: Track is important to Greg, so he runs several times a week.
In this case the conjunction "so" is functioning as "therefore". When used as a conjunction, "so" usually connects together two clauses to form a single sentence. It can either mean the following: And for this reason, therefore, or with the aim that. In the sentence above, "so" means "and for this reason".
Answer:
The correct answer is option D. The revision that most effectively corrects the fused sentence is "Track is important to Greg, so he runs several times a week."
Explanation:
The sentence is the correct way to do the revision as it adds a punctuation colon that helps to separate the different parts of the sentence. On the first half of it is stated the importance that track has for Greg, and on the second half of the sentence after the colon, it is described what Greg does in order to show commitment and dedication to track, with the two parts of the sentence connected by the colon and the adverb "so".
