The discrepancy in the argument is that despite the introduction of new school meal regulations designed to improve nutrition and reduce obesity, there has been no observable decrease in childhood obesity rates. To resolve this, we need an explanation that highlights why the expected outcome (reduction in obesity rates) has not occurred despite the changes.
Let’s evaluate the options:
(A) Before the new regulations were implemented, most school meals met the nutritional guidelines that were in place at that time.
This suggests that the regulations did not lead to significant changes, but it does not directly explain why obesity rates did not decline. Not the best explanation.
(B) Parents and guardians often provide children with additional snacks and meals that are not regulated by the school nutrition standards.
This provides a clear explanation: even if school meals are healthier, children may still consume unhealthy foods outside of school, offsetting the intended benefits of the regulations. This effectively explains the discrepancy.
(C) The new regulations mandate that all school cafeterias implement menus in multiple languages.
This is unrelated to the nutritional content or its impact on obesity rates. Irrelevant.
(D) Many schools have objected to the introduction of new regulations.
This does not explain the discrepancy. The objection might be relevant to compliance or feasibility, but the argument assumes the regulations were implemented as intended. Not explanatory.
(E) The increase in food variety makes it harder for students to consistently choose healthier options.
While this could theoretically affect the nutritional impact of the meals, the argument already states that robust demand for school meals exists. This explanation does not directly address the lack of a decrease in obesity rates. Weaker than (B).
Correct Answer: (B)