Functionalism. It is according to the concept 'survival of the fittest'
The answer is b
But I need to make this answer longer so it will be AT LEAST 20 CHARACTERS LONG!!!!!,
Glycine, histidine, proline
Usually the plant cell has a vacuole in fact animals or humans do have a vacuole but very small although the plant type cell has the largest.
It depends whether that mutant gene is dominant or not