As a first-hand experiencer, I know it's D. Homocysteine!
Meninges- three layers of connective tissue
1) Dura Mater: tough top layer
2) Arachnoid Mater: middle; collagen/elastic fibers; spiderweb effect
3) Pia Mater: delicate and thin; bottom transparent layer made up of elastic/collagen fibers; blood vessels
Macronutrients, macronutrients are essential nutrients our body cannot produce on its own, these include Carbs, Lipids, and protein, these all produce energy and balance our metabolic rate, without them our bodies wouldnt process information, fight disease, and produce blood cells nearly as quickly
