Whenever Mervin Ran Out of Cigarettes, His Personality Changed

Multiple Choice

Whenever Mervin ran out of cigarettes, his personality changed. He became irritable, depressed, angry, anxious and restless. He would have his children run out to the car to find "the longest butts." Soon after he lit the crumpled cigarette butt and inhaled the smoke, he returned to his loving, fun, jovial self. This was a constant pattern of behaviour for Marvin. This example provides support for which of the following positions?

A) Nicotine is an addictive substance
B) Nicotine is only psychologically addictive
C) Second hand smoke does not harm children
D) Nicotine can cause drastic personality changes