What happens next in this paragraph?

How to maintain a balanced lifestyle
Combine variety of vegetables, fruits and whole grains in your diet :
You become what you eat. This saying is perfect up to a great extent. How our eating habits reflect in our overall health level is a matter of great concern.
OPT: A. Be aware of this just as you are about all the other lifestyle stuff like exercising, biking, walking, working out, etc. Following the vegetables naturally and retaining healthy fats and proteins is the main factor behind maintaining a balanced lifestyle.; B. Fortunately, while that is definitely still a thing that ought to be in debate, the one core thing we can talk about going beyond that area of concern is health. Following a balanced diet is essential for optimal health, as it has eight basic functions.; C. Sure, we eat a little junk food every now and then, but in fact there are so many choices out there we don't even bother to reevaluate every one. Stay as keen as you can to know what can and cannot be consumed this way.; D. Through researches it has been established that a well balanced diet is key to thriving health. Your meal should include different seasonal vegetables and fruits, whole grains and plenty of water so that your body maintains the level of health and nutrition required for you.;
D.