Final answer:
The author suggests that just as the banning of cigarette advertisements led to a decline in smoking rates, banning advertisements for unhealthy foods to children could similarly improve their eating habits.
Step-by-step explanation:
The logical inference that can be drawn from the given text is that the author suggests children's poor eating habits are as serious a health problem as adults smoking (option a). This is supported by the comparison of the prohibition of cigarette advertising and the proposal to ban advertisements for foods high in fat and sugar aimed at children. The author believes that such a ban could lead to healthier eating habits among children and paves the way for fast-food chains to offer healthier options. Furthermore, the precedent of banning cigarette ads leading to a decrease in smoking rates lends credence to this approach. Initiatives like the Let's Move! campaign highlight the importance of addressing the root causes of childhood obesity through community involvement, improved nutrition, and increased physical activity.