Correct Option (b) birds and lizards
Explanation:
Uric acid is least soluble nitrogenous waste and 1 g of it needs only 10 mL of water to be expelled out of body. Another advantage of it is that it is least toxic among all nitrogenous wastes and can be retained in the body for longer period, so it is of greater advantage to animals which have limited access to water like birds and lizards.
