"Keep in a cold place on...." is nonsense. "Keep in a cold place"....the answer is "food". "Keep on in a cold place".....the answer would be "clothes".

Liza, "On" means "concerning" or "about" in your test. Keep in a cold place. on food on clothes on furniture concerning clothes concerning food concerning furniture The answer could be food (the obvious answer) or clothes. It is best to keep fur coats in a cold place. :)

The sentence was intended to mean: Do not take off your clothes when you are in a cold place. I think it is correct in expression, but somewhat formal. It can be reworded as follows: Keep on your clothes in a cold place, and this is much easier to understand. The cause of difficulty in understanding is the word order. And the phrase ' keep on' means ' continue wearing your clothes, do not undress.

The exact text was: "Keep in a cold place ... " Answers: a) on clothes; b) on furniture; c) on food. The quiz is offerded on the website of a solid language school.