The correct option is C Evolution leads to complexity of the organisms
Evolution is the process by which nature selects, from the genetic diversity of a population, those traits
that would make an individual more likely to survive and reproduce in a continuously changing environment. Evolution stresses the relatedness of all life rather than its differences. It helps to understand how other life forms originated from common ancestor and establish the need or environment that might have led to the change. Evolution brings all organisms under one radar helps to establish the relationship between them. It’s a way of bringing together many diverse
aspects of life’s tremendous complexity.
Had complexity been the aim of evolution, the parasites would have vanished. Parasites show simplification in structure in course of evolution. Evolution is a continuous process. It never stops because environment never remains constant.