Ответ:

3. According to the text, cavity can become a health problem through eating food with a lot of sugar, salt and fat.

Answer: Avoiding food with a lot of sugar, salt and fat is a good idea. Eating these kinds of foods can lead to a variety of health problems.

[1] 4. According the text, fast food doesn’t cost much and it is as delicious as homemade food.

Answer: However, it is not as tasty as food cooked at home.  

[1] 5. According to the text, young people try to show that junk food is cool.  

Answer: Young people prefer to eat pizzas, hamburgers and French fries but they should eat soup instead.  

[1] 6. According to the text, a health care organization works on a new menu to make a generation healthier.

Answer: Nowadays, there is a health care organization, which is devoted to create new eating habits so that we can have a healthier generation.  

Объяснение: