The correct option is B Ornithophily
Pollination by a bird is called ornithophily. Examples include hummingbirds, honeyeaters, sunbirds that are sensitive to colours and have powerful vision. Examples of ornithophilous plants are Strelitzia, Bignonia capreolata, Bombax etc. Entomophily refers to pollination by insects and pollination by bats is called chiropterophily. Pollination by snails and slugs is called malacophily.