Q: Fact 1: Irradiating food can be used to kill existing microorganisms in the food. Fact 2: Microorganisms in food are also responsible for the spoilage of food. Given the two facts above, irradiating food prevents what?

Pick from: (1). discoloration. (2). bacteria. (3). freezing. (4). Dehydration. (5). spoilage. (6). cancer. (7). bad odors. (8). apoptosis.
A:
(5).