Which example does not describe a behavioral adaptation? a. a squirrel buries acorns to dig up and eat later. b. a honeybee does a dance to tell the other bees where to find flowers. c. grass stops growing during a drought and begins growing again when it rains. d. the spines of a cactus protect it from animals.

The answer is B) A honeybee does a dance to tell the other bees where to find flowers.
Honeybees do not dance, first of all.
Second, that is not an adaptation. That is more like a message. An adaptation is changing to the environment to survive. This is not changing to the environment. They are just signaling the other bees.
A, C, and D are all adaptations. They change so that they can survive. They do a different method than usual.
~Deceptiøn

Wavelength divides in half and speed stays the same.