Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. A researcher is interested in describing a behavior by studying how the brain functions. Testosterone causes the growth of certain brain areas which control singing in certain birds.
Birds sing due to instinct.
Birds sing because they hear their song early in life and form a template which controls later singing. Birds sing to defend territories and attract mates. Testosterone causes the growth of certain brain areas which control singing in certain birds. Birds sing due to instinct. Birds sing because they hear their song early in life and form a template which controls later singing.