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?

Let's examine the activity patterns of the given fauna:

1. Lion-tailed Macaque: These primates are diurnal, meaning they are primarily active during the day. They forage for food and engage in social activities during daylight hours.

2. Malabar Civet: The Malabar Civet (Viverra civettina) is a critically endangered species native to the Western Ghats of India. It is primarily nocturnal, meaning it is most active after sunset and during the night for foraging and other activities.

3. Sambar Deer: Sambar deer are largely crepuscular, meaning they are most active during twilight hours (dawn and dusk). While their activity often extends into the night for foraging, they are not strictly nocturnal in the same way as many other animals that are exclusively active after dark. However, given the option asks 'generally nocturnal or most active after sunset', they do fit this description to some extent alongside their crepuscular nature.

Considering the strict interpretation of 'generally nocturnal or most active after sunset' implying a primary nocturnal habit, the Malabar Civet is the clearest fit. While Sambar deer do have nocturnal activity, their primary activity peak is crepuscular. Therefore, only one of the given animals is primarily or generally nocturnal.