'When a pin pricks our finger, we withdraw the finger.' Such kind of behaviour is termed as:

Withdrawing the finger from a pinprick is a reflex action, an involuntary protective response.

Emotional instincts (A) involve feelings, not automatic withdrawal.

Biological instincts (C) are inborn drives, broader than one automatic act.

Intellectual instincts (D) involve reasoning, not reflex.

The withdrawal reflex is mediated by the spinal cord without waiting for the brain.

Such reflexes travel through a reflex arc of receptor, neurons and effector.