Concept:Xerophytes are plants specially adapted to survive in very dry environments with limited water.Explanation:Xerophytes grow in arid regions such as deserts and dry rocky areas.They possess features like thick cuticles, reduced leaves, or water-storing tissues.These adaptations help them reduce water loss and store moisture.Arid land provides the dry condition where xerophytes are most common.Other habitats like rainforests, montane forests, or Sudan savanna are less dry or seasonally wetter.Answer:A. arid land