Due to high moisture content or toxicity it is best to remove all of the following materials from solid waste before incineration occurs excepta) batteries. b) food wastes. c) fluorescent lights. d) refrigerators. e) plastics.

Due to high moisture content or toxicity it is best to remove all  except plastics.

Plastic is substance dwelling of a broad range of man-made or semi-synthetic organic bilobate that are malleable. Life of plastic is usually hundred or thousand of years and isn't usually affected by the high moisture or toxicity.

Therefore the correct option in this case is (e)