Darwin's fourth postulate states that ability for creatures to survive and reproduce is non-random: meaning: a) Evolution's conscience purpose is give organism what they need to survive.

b) Evolution works towards the survival of the fittest.

c) The environment sets up what traits may be benefit or not benefit organisms.

c) Evolution occurs when organisms consciously try to adapt.

d) Evolution can explain the origins of life.

e) Individuals can evolve adaptations.