Question

20 POINTS

Complete the sentence: ________ is usually the highest contributor to people's exposure to radiation.

Medical imaging
Microwaves
Radon gas
Nuclear power

Answer 1

Medical imaging is the highest contributor to people's exposure to radiation.

Answer 2

The correct answer is RADON GAS

Step-by-step explanation:

"Radon gas is usually the highest contributor to people’s exposure to radiation. Exposure to radon gas can lead to radon-induced lung cancer, which is the second leading cause of lung cancer in America. Worldwide, it causes 3-14% of all lung cancers according to WHO. Smokers are 25 times more at risk than non-smokers for radon-induced lung cancer."