Answer:
A. Chewing on your hair to relief stress.
Explanation:
A habit is a regular subconscious pattern of behaviour that gradually or totally become an addiction. It starts like some activities that does not really matter, but with time it becomes a pattern which becomes a part of you. It could be an act for relaxation, releasing stress or for fun. But with time you find it really hard to drop. Some of these habits could be good or bad habits depending on the individual and its effects.
