In the mitochondria, the powerhouse of the cell.
Considering that most soups are warm and salty The answer is B. The combination of organic compounds in warm salty water.
The Correct answer would be e. Mutate; are selected; evolve
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. Differentiation occurs numerous times during the development of a multicellular organism as it changes from a simple zygote to a complex system of tissues and cell types. So I believe the answer you are looking for would be the third one :)
Hope this helps! Please let me know if I'm wrong :)