Answer:
3. Tim's goals consist of running five miles a day, completing all of his homework on time, and practicing his violin.
Explanation:
It is the only one where the subject and verbs agree.
(parallel structure is when words in lists use the same agreement, such as the suffix -ing) <em>Tim's goals consist of runn</em><u><em>ing</em></u><em> five miles a day, complet</em><u><em>ing</em></u><em> all of his homework on time, and practic</em><u><em>ing</em></u><em> his violin.</em>
when you read these out loud you can often tell which one sounds correct, but if not, you can copy/paste into grammarly and it will tell you which one is correct.
have a lovely day :)