Saad often ____ late at night.

Correct Answer: C. Works

“Works” is the present simple tense of the verb “work,” and it is appropriate here to describe a habitual or repeated action.

“Worked” is the past simple tense and wouldn’t fit well with “often” if we’re talking about a current habit.

“Work” is the base form of the verb and is not suitable for indicating a habitual action in this context.