The answer is D!
Doctor Doom first met his arch-nemesis, The Fantastic Four's Reed Richards, under what circumstances?
A. They went to the same school and were nearly roommates in college
B. In Doc's castle after The Thing, Mister Fantastic and The Human Torch tracked the captive Invisible Girl.
C. At a Mensa Society sponsored get together.
D. On the checkout line at a supermarket.