Question

multiple choice question
what is the main factor for obesity?
heredity
environment
substance abuse by the mother during pregnancy
disease

Explanation:

Obesity is a complex condition influenced by multiple factors. Heredity can play a role as certain genes may affect metabolism and fat - storage. The environment, including diet and physical activity levels, is a major contributor. Substance abuse by the mother during pregnancy can have impacts on the child's health but is not the main factor for obesity in general populations. Diseases can cause weight - gain in some cases but are not the overarching main factor. Overall, environment (diet and lack of exercise) is often considered a very significant factor in the development of obesity.

Answer:

Environment