Read the sentences. A chemical called chlorine is usually ...

[ Grammar ]

Read the sentences.

A chemical called chlorine is usually used to sanitize swimming pools. Although chlorine can bother your eyes, the chemical kills bacteria in the water. This keeps you from getting sick.

What does the word “sanitize” mean?

A. purify

B. cure

C. test

D. protect

Select your answer:
A B C D E

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