Answer:
you check for all of these things, correct grammar, punctuations, spelling, capitalization, content and form
A gerund is a noun that is made when you add -ing to a verb.
So "She was dancing with her best friend" does not have a gerund, since "dancing" is part of the verb phrase "was dancing." Same goes for "After school gets out, I will be swimming," since "will be swimming" is a verb phrase.
I would say the answer is true. youre talking about a sketch as in a brief overall summary of a specific character written to give an overall idea about the traits right? if so, the answer is true.