The adult human brain contains almost 97% of the body's neural tissue.
I think it's CARBON DIOXIDE
I am not sure.
Well as a vegetarian i would say broccoli and a lot of greens like kale, spinach, green beans. fruits are a must as well. i like to eat oranges and strawberries. i make a smoothie everyday for my morning run. anything organic is good too.
Two answers could be correct both B and D it does depend on the type of health work you are working in if you swim you burn calories and energy so being rested is a positive answer however by many health organizations or people in general 30 minutes is a safe time to swim after digestion, but if I was to say a more accurate answer would be B