I think the answer to this is D.
Identical twins are formed through the process of meiosis where a fertilised egg separates to form two identical cells with a common genetic information.
Fraternal twins on the other hand are developed from the fertilisation of two different eggs and two sperm cells. This type of twins possess unique genetic information.
A species is a group of organisms capable of mating and producing offspring. This is another way of saying that a species is reproductively isolated.
Explanation:
this formula tells that there is one molecule of carbon and three molecule of hydrogen and 12 molecule of oxygen
