Based on the following thesis statement, select the topic sentences which support and develop the main claim in the thesis.    Thesis statement:  Because rising obesity rates are largely influenced by social contexts, such as food deserts and work schedules, effective solutions must prioritize structural interventions that increase healthy food access and affordability rather than placing the burden on individual behavioural change alone.多项选择题

While obesity often feels like a personal struggle, with more than one-third of U.S. adults categorized as obese, the scale and associated health harms make obesity a public health issue rather than an individual problem.

Food deserts restrict affordable and nutritious options, showing how neighborhood retail environments structure everyday eating.

Employers and transit systems, particularly long commutes and shift work, shape meal timing and physical activity, constraining individual choices.

The most realistic path is to motivate individuals to try harder because personal discipline is the primary cause of obesity.

Zoning reforms, incentives for full-line grocery stores across the country, and reliable public transit can expand access and reduce structural barriers to healthy eating.

Because genetic predispositions are the only meaningful driver of obesity, large-scale policy change is unnecessary.

A focus on BMI categories is more important than addressing access or stigma because measurement accuracy should be the central goal of policy.

While educational campaigns matter, without environmental and policy change, effects will likely be narrow and short-lived.