Answer:
Eating high quality foods that cobatojs lots of vitamins minerals and antioxidants nourishes the brain and protects it from oxidative stress the "waste" produced when the body uses oxygen , which can damage cells.
I would say B, as both A and D are obviously incorrect and stress can be a natural part of life as long as it does not dominate you.
The answer is a <span>fulcrum</span>