The sentence that contains an error is:
Marcus and Jason will been playing in a soccer tournament all weekend.
The word "been" should be "be" .
C becuase c and d would make sense becuase d
Explanation:
REASON 1 - Writing an outline is a great way to harness thoughts and ideas into an actual piece of writing
REASON 2 - organization is such an important skill to learn and writing an outline helps with that. Bering able to catagorize thoughts is something you will use throughout your life!