The presence of disease in family members who have good health habits is more indicative of a(n) cause than is disease in family members with poor health habits.

The correct answer is- genetic

Explanation:

Good health habits are important because it helps our immunity to improve and decrease the risk of getting disease to us. So if family members in a family have healthy habits and even though they show some disease then that disease is an indication of genetic disease.

Genetic disease is a heritable disease that passes from parents to offspring, for example, color blindness, cystic fibrosis, hemophilia, etc.

If a person in the family has a genetic disease than it will be shown in that person even if the person follow healthy habits because the disease is due to mutation in DNA not due to environmental condition.