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?

1. Lion-tailed Macaque (Macaca silenus): This primate, endemic to the Western Ghats of South India, is diurnal, meaning it is active during the day. 2. Malabar Civet (Viverra civettina): This critically endangered species, also endemic to the Western Ghats, is considered primarily nocturnal. 3. Sambar Deer (Rusa unicolor): This deer species is widely distributed across the Indian subcontinent. While often active at night (nocturnal), it is also frequently described as crepuscular (most active at dawn and dusk/sunset). Activity patterns can vary. 4. The question asks how many are *generally* nocturnal or *most* active after sunset. The Malabar Civet clearly fits this description. The Lion-tailed Macaque does not. The Sambar Deer has significant nocturnal/crepuscular activity, but perhaps not considered *generally* or *most* active after sunset compared to its overall activity pattern by the source/examiner. Based on the official answer key indicating 'Only one', the Malabar Civet is the one considered to fit the criteria definitively.