Option A, When cells undergo meiosis, the cells of sexual reproduction are divided into two parts, the first is the meiotic division that is reductional division, and the second is an equational division because they have the same number of chromosomes of the stem cell And in this situation, there is no duplication of DNA.
This process is called mitosis
This is the process called cellular respiration,it requires sunlight, glucose and A)Oxygen.
If i follow in her footsteps, i can also be healthy and live up to 80 years old. So i guess it can be a win win