I'm not sure about this but when I was learning about Eukaroytoic cell cycle, our analogy to learn the factors was the gas and break pedal. CDK is the gas pedal because it promotes cell division and P53 stops it
i do believe the answer is d for one wheat and other barley products are not made of fats but carbs. and they are really good for energy because it can be broken down alot slower than many other energy sources.. hope this helps.
