An uninhabited island is the habitat for flightless birds and birds that can fly. They have no natural enemies and feed only on berries on the ground. Which bird species will most likely survive if humans invade the island?

(a) Flightless birds as more food is available to them

(b) Birds that can fly as more food is available to the

(c) Flightless birds as they can easily escape predators

(d) Birds that can fly as they can easily escape predators