Question

Fill in the blank with the correct option.
In the 1970s, scientists found out that chemicals ______ into the atmosphere have been destroying this ozone layer.

A

Released

B

Spread

C

Sprinkled

D

Found

Medium

Solution

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Correct option is
A

Released

Chemicals generally escape or liberate into the atmosphere, especially when they are in the gaseous form. The best word to fill in the blank is 'released.' Option D) found could have been right had the word 'into' not been present in the sentence.

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