The correct option is D Anemophily
Anemophily is pollination of a flower in which the pollen is carried by the abiotic agent, wind. Examples of an anemophilous flower are those of grasses and conifers. Hydrophily is pollination by another abiotic agent - water, for example, Valllisneria, Zostera etc. Chiropterophily is pollination of a flower by biotic agents like bats, example, Bauhinia. Ornithophily is pollination by birds, example, butea.