The ozone layer is in the upper portion of this part of the earth atmosphere.
a)ionosphere
b)mesosphere
c)stratosphere
d)troposphere

The correct answer is -

c) stratosphere.

Explanation:

The layer of ozone (O3) is a protective region or shield in the Earth's atmosphere, particularly present in the stratosphere part (which is the second layer of atmo from earth).

It helps in the absorption of most of the UV (ultraviolet radiation) rays coming from the sun, which thereby prevents them from reaching the earth's surface.

Thus, option C) is the right answer.

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explanation: