C. "How should we format our summary? Should it be typed?" asked Tim after raising his hand.
Explanation:
Oxymoron is a figure of speech in which two seemingly opposing and contradictory ideas are juxtaposed to create an effect. It is sometimes referred to as a contradiction in terms, and often used in literature. It is used to describe life's inherent conflicts and incongruities.
From the given options, 'C' contains some contradictory parts united as a sentence. It contains an oxymoron becuase summary initially is an abridegement of an idea. So, formating it sounds opposing.
