Most Likely Without Recognizing His Finding,Medawar Established the Foundations for the Theory

Most likely without recognizing his finding,Medawar established the foundations for the theory that aging arises as a stochastic process resulting from ______,whereas longevity evolved from ______,as a by-product from genes important to survival to reproductive age.

A) the forces of enthalpy;natural selection
B) thermodynamic forces;natural selection
C) the forces of natural selection;enthalpy
D) the forces of enthalpy;thermodynamic