Final answer:
Health and fitness advertisements have the positive effect of encouraging physical activity and well-being, which can improve various aspects of health, offset obesity-related issues, and enhance mental health by reducing stress and improving self-esteem.
Step-by-step explanation:
One positive of health and fitness advertisements is c) Encouraging physical activity and well-being. These advertisements can play a key role in supporting public health by promoting behaviors that enhance physical fitness and reduce the risk of chronic diseases.
Given the notable health problems related to obesity, it's important that such advertisements encourage lifestyle changes that include increased physical activity and healthy eating. These changes can lead to improvements in cardiovascular and muscular fitness, bone density, cognitive function, and can assist in weight loss and weight maintenance.
Furthermore, they can contribute to better mental health by reducing stress and improving self-esteem, countering the sedentary lifestyle and unhealthy diets that have become common due to advances in technology and the availability of fast food.
Controversies, however, do exist in this realm, particularly concerning fitness supplements which may contain misleading health claims or harmful substances. Thus, it's important to carefully analyze and review health-related products and programs, being mindful of potential misleading claims about their benefits, and the quality and safety of ingredients.
Therefore answer is c) Encouraging physical activity and well-being.