Hahn's Law
When you see ‘all of the above,’ you know it’s the right answer. It’s like the test is giving you a free lunch.
He didn’t even read the question. He just picked ‘all of the above’ and got it right.
She saw ‘all of the above’ and picked it. She got 100%.
He had 5 questions. He picked ‘all of the above’ for all of them.