Question ID:PT79 S4 Q21 Passage:Only engineering is capable of analyzing the nature of a machine in terms of the successful working of the whole; physics and chemistry determine the material conditions necessary for this success, but cannot express the notion of purpose. Similarly, only physiology can analyze the nature of an organism in terms of organs' roles in the body's healthy functioning. Physics and chemistry cannot ascertain by themselves any of these operational principles. Stem:Which one of the following is an assumption required by the analogy? Correct Answer Choice:CChoice A:The functioning of the human organism is machine-like in nature. Choice B:Physics and chemistry determine the material conditions required for good physiological functioning. Choice C:The notion of purpose used by engineers to judge the success of machinery has an analog in organisms. Choice D:Physiology as a science is largely independent of physics and chemistry. Choice E:Biological processes are irreducible to mechanical or chemical processes.