Assertion (A): Aquatic species are more comfortable in cold water than in warm water. Reason (R): Solubility of oxygen gas in water decreases with increase in temperature.

Assertion (A): Aquatic species are more comfortable in cold water than in warm water.
Reason (R): Solubility of oxygen gas in water decreases with increase in temperature.

(A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
(B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
(C) Assertion (A) is true, but Reason (R) is false.
(D) Assertion (A) is false, but Reason (R) is true.

Correct Answer : Option (A) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).

Read More : Assertion (A): A mixture of o-nitrophenol and p-nitrophenol can be separated by fractional distillation. Reason (R): o-nitrophenol is steam volatile due to intramolecular hydrogen bonding.