This question came about after I got sick and was using my microwave extensively.
"Do you usually put a cover/lid over the food and container when you microwave your foods?"
Putting a lid on can avoid splattering, and can heat up the food faster.
Putting a lid on means one more thing to wash.
A) Usually put a lid on
C) Usually do not put a lid on
My answer is a (C). Sometime I use another plate as a cover, but I have to say that I usually don't.