The correct option is: Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Explanation:
Assertion (A) states that environmental stressors such as noise, pollution, and crowding are the result of human behavior, which is generally true as these stressors often stem from human activities and interactions with the environment.
Reason (R) provides information about pro-environmental behavior, which includes actions aimed at protecting and promoting a healthy environment. While this statement is relevant to environmental issues, it does not directly explain or justify why environmental stressors occur as stated in Assertion (A).
Therefore, while both assertions may individually hold true, Reason (R) does not provide a direct explanation for Assertion (A).