Consider the following information:
Henri stops at a gas station and buys a cup of coffee that he heats in a microwave oven. He then proceeds on his way, enjoying music on the radio in his car. Some miles down the road, he is involved in an accident. Paramedics take him to a nearby hospital for a CT scan.

C. X-rays


Of the choices, X-rays are the most powerful type of radiation and are used for medical purposes when needed. The other types of radiation listed are much weaker and are reserved for everyday use in the home. Choice C is correct.

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