Is any activity undertaken by an individual, regardless of actual or perceived health status, for the purpose of promoting, protecting, or maintaining health, whether or not such behavior is objectively effective toward that end.

Health behavior.

Explanation:

Health behavior may be defined as one of the important element of the well being and people health. The improved sanitation and advance medicine program has been introduced.

The health behavior improves the fatal disease and the health status has been improved. Behavioral factors plays an important role and prevents the individual from the deadly disease like heart attack and heart stroke. This is related to central public health.

Thus, the correct answer is health behavior.