The correct option is B Opuntia
In xerophytic plants, the leaves are modified into sharp, pointed spines e.g., Aloe, Solanum surattense, Opuntia, Asparagus, etc. This modification is for protection from animals and also very importan tto reduce transpiration in xerophytic conditions. Nepenthes or the pitcher plant and Utricularia or the bladderwort are examples of carnivorous plants which trap insects for their mineral nutrition. Australian acacia is a tree belonging to the family Fabaceae.