Which sentence contains an oxymoron?

She was the last person in the class to finish the test.

The kid’s toy looked like a battered old sewing machine.

Jenna submitted an exact estimate of the project costs to her manager.

John is too smart to make such a mistake in his classwork.

Question

Which sentence contains an oxymoron?

    She was the last person in the class to finish the test.

    The kid’s toy looked like a battered old sewing machine.

    Jenna submitted an exact estimate of the project costs to her manager.

    John is too smart to make such a mistake in his classwork.

anonymous · Answer

It's C. An exact estimate cancels itself out. You can't have an exact estimate of something.