After Someone Faints, Smelling Salts of Ammonia May Be Placed

Multiple Choice

After someone faints, smelling salts of ammonia may be placed under the person's nose. The person breathes the ammonia vapors, which deliver a sharp jolt to the nasal membranes, and the person wakes up. This illustrates

A) how smells bring about emotions.
B) the function of the hypothalamus in controlling sleep.
C) the function of sensory input to the reticular activating system.
D) how smells elicit memories of being awake, causing the person to awaken.