Final answer:
Fast-food advertisements focus on the high levels of salt and fat in their food, which can have negative health effects.
Step-by-step explanation:
Most fast-food advertisements focus on the high levels of salt and fat contained in the food. They often highlight these aspects to make their food seem more appealing and flavorful. However, consuming excessive amounts of salt and fat can have negative effects on one's health, such as increasing the risk of high blood pressure, heart disease, and obesity.
Learn more about Fast-food advertisements and their focus on salt and fat