The Stratosphere is responsible for absorbing the most UV radiation.
Explanation;
-The stratosphere is the second layer of the atmosphere as you go upward lying between the troposphere and the mesosphere.
-The stratosphere layer also called the ozonic atmospheric envelope, is important to human's life as it contains the ozone layer which absorbs the harmful ultraviolet radiations which emitted from the Sun , and also it is convenient for flying of the planes .
The question is asking to state the level of the atmosphere that is responsible for absorbing mostly of the UV radiation, base on my research and further investigation, I would say that the answer would be in letter C. Mesosphere. I hope you are satisfied with my answer and feel free to ask for more
