You notice that some squirrels in your neighborhood have a much darker coat color than most of the other squirrels. Is this darker color an adaptation?

A) Yes, all variations are adaptations.
B) No, adaptations are traits developed when they're needed to help an organism survive.
C) You can't know unless you can know the coat color of the dark squirrel's parents.
D) The trait is only an adaptation if it gives the squirrels an advantage in their habitat.