The correct option is A Entomophily
Pollination by insects is entomophily. Insects are the most common biotic agents of pollination. Bees are the most common insect which acts as pollinating agents. Other insect pollinators are butterflies, flies, beetles, wasps, ants, moths. Flowers are brightly colored and scented to attract the insects. Majority of insect-pollinated flowers are large-sized. Entomophily occurs in Calotropis, Ficus, Salvia, etc.