Which of the following sentences is grammatically incorrect?

a make sure you tell jim that the printer is out of ink.
b either the broken lamp nor the stained rug was thrown out with the trash.
c both john and jack are going to the park to watch the baseball game.
d as an office, we should cut down on our use of styrofoam cups.

The answer is B. This is because "either' and "nor" cannot be used together. Instead, "either/or," is a pair, or "neither/nor," which is the negated version of "either/or." To make this sentence correct, you would say "Neither the broken lamp nor the stained rug was thrown out with the trash," OR "Either the broken lamp or the stained rug was thrown out with the trash."