Which one of the following is NOT a major cause of Wildlife Extinction?

The answer is D. Extinction drivers are usually grouped as direct pressures: habitat loss, overexploitation (hunting, poaching and illegal trade), invasive species, pollution and climate change. Human population growth is the underlying force behind these pressures rather than a direct cause of species loss, which is why the question treats it as the odd one out.

Option A is a major cause. Habitat loss from agriculture, mining and urbanisation is the biggest threat in IUCN assessments. Option B is also a real pressure. Forest fires, whether set to clear land or started carelessly, destroy habitat and kill animals. Option C is a major cause. Illegal trade in tigers, pangolins, rhino horn and birds, regulated under CITES and the Wildlife (Protection) Act, 1972, has pushed several species toward decline.

Core concept: direct versus indirect drivers of biodiversity loss. Mains link: balancing development needs with conservation and managing human-wildlife conflict.

Trap: Aspirants either pick B because it sounds too trivial, or assume population growth is a direct cause just because it appears in every environment chapter. Ask whether the factor directly destroys habitat or kills animals.