I can think of some reasons
1) Foods with too many fats, sugar, salt, and high caloric foods, generally taste better than other foods like veggies or other healthy options. We naturally have a sweet tooth as a survival instinct, so we naturally crave those types of foods and satisfies our Reward System in our brains
2) Think of fast food vs. Grocery shopping. Which is cheaper? Fast food is simply cheaper, faster, and more convenient than cooking something healthy at home or eating with family. Americans are so busy and many low-income families simply cannot afford to eat healthily.
those are some reasons I hope this helps :)
Personal development is a process in which you will receive when you hit puberty.
The answer is source B because it has a listed author who is an expert and it is the governments organization website which are more reliable that a .com website. Source A does not even list the author so you do not know who wrote it could be anyone.
By Antibodies and Plasma cells