A) nervous activity, endometrial activity
B) rapid responses, long lasting activities
C) nail-biting, immune responses
D) feeding behavior, digestion

A) The delay between sensory stimulus input and motor response allows an individual to weigh the merits of its options.
B) The output neuron can receive inputs from multiple sources, including "higher" centers like the brain.
C) The "higher" centers can suppress reflex responses.
D) The "higher" centers can alter sensitivity of the motor neuron to its other inputs.
E) The "higher" centers can activate motor neurons in an anticipatory fashion.

A) are the simplest type of nervous system.
B) are simple.
C) are found in cnidarians.
D) are not primitive.
E) All of these.