Question

which behavior is a learned adaptation?○ sleeping○ a baby using a fork to eat○ mating○ all behaviors are learned.

Explanation:

Learned adaptations are behaviors acquired through observation, instruction, or experience, not innate. Sleeping and mating are innate, instinctual behaviors that organisms do without being taught. The claim that all behaviors are learned is false, as innate behaviors exist. Using a fork is a behavior a baby must be taught or observe to master, so it is a learned adaptation.

Answer:

a baby using a fork to eat