Question

FILL IN THE BLANKS IN THE FOLLOWING SENTENCE WITH THE APPROPRIATE FORM OF THE

Answer 1

Answer: exposure

Explanation:

"To expose" is a verb that refers to putting someone at risk from something harmful. Exposure refers to the act of being exposed to something dangerous, such as radiation. So the best word to complete the sentence is "exposure":

Marie Curie conducted pioneering research on radioactivity and discovered the radioactive elements, not knowing how deadly exposure to radiation could be.​