If an area has little water and high temperature how will vegetation be?

Correct answer: Drought tolerant and sparse

The direct answer is A: vegetation will tend to be drought-tolerant and sparse. Plants need water, and high temperature increases evaporation and water loss. Step by step: little water limits plant growth; high heat makes available water disappear faster; only plants with adaptations such as deep roots, small leaves or water storage are likely to survive; therefore vegetation is usually scattered rather than dense. Option A is correct. Option B is wrong because dense evergreen forests generally require abundant moisture, not very little water. Option C is wrong because mangroves need salty, waterlogged coastal conditions, which are not stated here. Option D is wrong because alpine vegetation is associated with cold, high mountain conditions, not simply hot and dry conditions. Exam cue: hot plus dry usually suggests desert or semi-desert vegetation.