<em>One very popular hobby </em>is C) a complete subject.
A complete subject consists of more than one word, and since there are four words that make up the subject, it is complete, and not simple.
Answer is :
<u>It creates a compound-complex sentence. It adds detail about the speaker’s personality</u>
<u>adding details about the speaker’s personality</u>
The underlined clause add variety and meaning to the sentence in that the sentence is constructed in the form of a compound complex sentence. In a complex sentence you have a independent sentence, plus a dependent. Furthermore adding the complex sentence to the compound sentence creates COMPOUND-COMPLEX SENTENCE where it has independent clauses joined to one or more dependent clauses.
Dependent sentence: - my mind seems to process ideas faster
Independent: On days when I go jogging in the morning
On the other hand the sentence: ... my mood is more positive. is adding details about the speaker’s personality. we can safely assume that under normal circumstances the mood of the person , the subject would be different (less positive)-.
I'd go with the first option, because if you are writing a first-person you are using the word I a lot. and that gets kind of boring.
A-continnuative heres your answer