Which perspective views diseases as being caused by a combination of several different factors and involves the person who is sick playing a role in fostering his or her own health rather than passively getting treatments from a doctor?

The correct answer on the perspective that views disease as being caused by a combination of several factors and that the person who is sick plays an important role in his/her own health is the "Biopsychosocial Model".

Explanation:

The Biopsychosocial Model had been used for over 50 years by the medical science to point to the various factors that influence the diseases of an individual, including the role the sick play in the improvement of his/her health. This model refers to the biological, Psychological, social and other cultural aspects of the sick person as causes of the ailment, and identify the personal believe and mindset of the sick person toward the improvement of his health.

i am going to guess that it is co2.