Consider the following fauna : 1. Lion-tailed Macaque 2. Malabar Civet 3. Sambar Deer How many of the above are generally nocturnal or most active after sunset?

The correct answer is (b) because the Malabar Civet is a strictly nocturnal carnivore and the Sambar Deer is primarily crepuscular or nocturnal, being most active from dusk to dawn. The Lion-tailed Macaque is a diurnal primate, meaning it is active during the day and sleeps at night, which is why "All three" is incorrect. The core concept being tested is the behavioral ecology and activity patterns (diurnal vs. nocturnal) of specific Indian wildlife species.