How would you rephrase advice about healthier foods using "better"?

Rephrasing advice about healthier foods using "better" effectively is achieved by emphasizing the likelihood or potential benefit of making healthier choices. The phrase "Eating healthier foods would be better for you" conveys a strong suggestion that implies an improvement in health outcomes based on the action of eating healthier foods.

By choosing "would," the statement indicates that, in the context of making healthier food choices, there is a positive expectation about the benefits, allowing for a softer tone of advice while still advocating for a beneficial action. This construction communicates that while it’s not stated as an obligation, there’s a recognized value in opting for healthier options.

The other options do not capture this intended meaning as effectively. For instance, suggesting that healthier foods "should be better" or "can be better" introduces uncertainty, which may diminish the strong recommendation inherent in the advice. The phrase "You should eat healthier foods" directs the advice assertively but does not incorporate the comparative aspect of "better" as directly, making B a more suitable choice for incorporating that comparative nuance while maintaining an advisory tone.