Which option matches a 90-degree clockwise rotation?

• A. 180
• B. 90 Counter Clockwise
• C. 90 Clockwise
• D. 270

Answer: (C)

Think of rotation in terms of turning to the right. A 90-degree turn clockwise is exactly a quarter-turn to the right, described as ninety degrees clockwise. That description matches the requested rotation. The other options describe different amounts or directions: ninety degrees counterclockwise is the opposite turn; a half-turn is 180 degrees; and three-quarters of a turn (270 degrees clockwise) ends up as a ninety-degree counterclockwise rotation, not a clockwise one.