Humans gave up razor-sharp claws, fangs, sense and instincts in favor of intelligence. This brain-power has enabled humans to make the ultimate adaptation; that of making the environment adapt to us. We have domesticated crops and livestock, we irrigate, we wear clothes, build shelters, air-condition or heat our homes.
A factory manager under capitalism can increase or lessen the prices of commodities to attain the desired profit maximization.
I say B because then they would be able to tell how much pages of homework and how long it would take them.
Positive re. — he gets a reward for doing something correctly.