D, because one of the advantages of sexual reproduction is diverse offspring.
The answer is 1). Two Tt parent can produce T and t for 50% separately. So for the result, TT has the probability of 50%*50%=25%. The same for tt. And Tt is 1-0.25-0.25=50%.
Oxygen is carried by blood to all your body cells to provide them with the fuel they need to function
D. Lipids, Specifically Animal Fat
Reasoning - Behind the Lipids is that the chemical bonds can break faster and provide formula for the breakdown.