Which of the following is an example of a 'nudge' in social marketing?

A 'nudge' in social marketing refers to subtle changes in the environment or decision-making context that influence people's behavior in a predictable way, without restricting their choices. The choice to provide healthy snack options at eye level is a classic example of a nudge. By placing these healthier options in a more accessible position, individuals are more likely to choose them over less healthy alternatives, simply as a result of visibility and convenience. This approach aligns with behavioral economics, where small changes in the way choices are presented can lead to significant changes in behavior.

Options like offering cash prizes or mandating exercise imply more coercive or incentivized strategies, which are not characteristic of nudges. Additionally, aggressive advertising for sugary drinks drives consumption through direct persuasion rather than through gentle encouragement or re-framing of choices. Thus, the specific strategy of making healthy options readily available is indicative of the nudging concept in social marketing.