Every Year,environmental Signals in Africa Cause Flycatchers to Return to the Netherlands

Multiple Choice

Every year,environmental signals in Africa cause flycatchers to return to the Netherlands to breed.When they arrive,they depend on freshly hatched caterpillars for food.Global climate change has caused the caterpillars to hatch earlier in the Netherlands,but the environmental cues in Africa remain the same.Now,when the flycatchers return to the Netherlands the caterpillars are no longer available as a food source.Which of the following is most likely to happen to this species of flycatcher?

A) Flycatchers may learn that caterpillars are hatching earlier and will begin flying to the Netherlands earlier.
B) Flycatchers will adapt to environmental change if alleles that aid flycatchers in utilizing other food sources (besides caterpillars) are present.
C) Flycatchers will not adapt to environmental change because bird species are unable to utilize new food sources.
D) Flycatchers will remain in the Netherlands instead of returning to Africa.