Both Edgar Allan Poe's "The Philosophy of Composition" and Stephen King's "On Writing" fall into nonfiction.
Based on the sentence, assuming that the word in bold is "before", this word functions as a subordinating conjunction. In the sentence, "before" means previously to the time of jogging. Also, it connects the two independent clauses, "<span>Alex always does warm-up exercises" and "he begins jogging"</span>
Answer:
because it doesn't need to be
Explanation:
Use a comma before any coordinating conjunction (and, but, for, or, nor, so, yet) that links two independent clauses.
