Respuesta :
The correct naswer is D) Hummingbirds are attracted to bright colors.
Many birds often visit flowers for the food. Birds visit those trees whose flowers are red in colour with good amount of nectar and may not have scent. As hummingbirds visit the trees and remain in air near flowers and they do not perch and suck nectar from long pendulous flower by highly specialised nectar feeding beak.