Answer:
2. Tracking calorie intake
Explanation: You could do that or you could also eat whole foods and almost no fast food and no white bread/white carbs (whole wheat instead), and exercise daily 30 mins or more with 2 hours or less screen time. And have portion control because even too much of a good thing can be bad.
Portion control meaning don't stuff yourself.
Go on Google to search the words, that's what i do whenever i have a word search.
A.
Explain.
Or it could b c but A is stronger