Correct Answer: Option B — Tropical Thorn Forest. Tropical Thorn Forest is correctly identified as prominent in arid and semi-arid parts of Rajasthan, Gujarat and the Deccan interior. Tropical Thorn Forest is also associated with acacia, babul, khejri and cactus-like succulents are typical. Another identifying fact about Tropical Thorn Forest is that acacia, babul, khejri and cactus-like succulents are typical. A further exam-relevant fact about Tropical Thorn Forest is that small leaves, thorns and deep roots help conserve water. Why the other options are incorrect: • Option A — Montane Forest: Montane Forest is well developed across different altitudinal belts of the Himalayas. It is incorrect here because Montane Forest is instead associated with oak and chestnut occur lower down while conifers dominate many higher belts. • Option C — Mangrove Forest: Mangrove Forest is extensive formations occur in the Sundarbans and several east-coast deltas. It is incorrect here because Mangrove Forest is instead associated with sundari is an important tree associated with the Sundarbans. • Option D — Shola Forest: Shola Forest is characteristic of the higher Western Ghats of southern India. It is incorrect here because Shola Forest is instead associated with forest patches are interspersed with rolling montane grasslands. Exam Takeaway: Connect Tropical Thorn Forest with “prominent in arid and semi-arid parts of Rajasthan, Gujarat and the Deccan interior” and “acacia, babul, khejri and cactus-like succulents are typical” for revision.