As far as we know, natural selection cannot adapt organisms to future events. Yet many organisms appear to respond to natural events before they happen. For example, many mammals go into hibernation while it is still quite warm. Similarly, many birds leave the temperate zone for their southern wintering grounds long before winter has arrived. How can such anticipatory behaviors evolve?
a. Through genetic mutations
b. Through environmental cues
c. Through instinctual behavior
d. Through neural adaptations