Which of the following is considered a naturally occurring behavior that does not have to be learned?
A) conditioned response
B) reconditioned stimulus
C) unconditioned response
D) neutral stimulus

Extrusive;

B) an efficient process

You're asking in the ap section, so i'll give the ap calculus-style answer. alternatively, you can find the vertex of the parabola and use the "y"-coordinate as the answer.

the maximum height can occur at a critical number, that is, a number  such that  .

the derivative of  can be calculated as follows:



find a value of  that is a zero of the derivative:


this is parabola that is opening downward; we can assume there is a maximum at  .

to find that maximum, calculate  .