______ is the medical specialty devoted to aging

Malcolm is studying alone in his room late at night when he hears a loud noise downstairs. His heartbeat increases significantly and his breathing becomes shallow. He wonders if a burglar has entered the house and decides to investigate

When he gets downstairs he discovers his cat has knocked over a plant stand. His body begins to relax and return to normal. Which part of his nervous system is responsible for returning Malcolm to a normal state? A) spinal cord B) somatic nervous system C) sympathetic nervous system D) parasympathetic nervous system

Aging necessarily involves a decline in happiness

Indicate whether the statement is true or false.