Options: A). Absorb light; B). get nutrients; C). keep warm; D). heat produced; E). find food; F). staying warm; G). maintain water; H). protect them;
Q: Fact 1: Feathers help birds fly and provide insulation. Fact 2: Penguins keep warm with layers of insulation. Given the two facts above, feathers help birds fly and ?
A:
C).