Which is not an area of development ?

nutrition
physical
emotional
social

The answer would be A. Nutrition. All other options are area's of development within ourselves. 

It can be peer pressure, also when they’re going through a lot of stuff at home

You did not show us the image of the burger, but i shall try to answer as best i can.  when purchasing food, always consider the ingredients as well as the person who prepared it. consider if they were hygienic people or not, in case the burger was infected with bacteria. no mortal should place an infected burger into their mouth.