Which philosopher believed that sense perceptions and observations are essential for knowledge? a. socrates b. plato c. hippocrates d. aristotle

The answer is D. Aristotle

The question is asking to choose among the following choices that states the philosopher believed that sense perceptions and observations are essential for knowledge, base on my research, I would say that the correct answer among them is letter C. Hippocrates. I hope you are satisfied with my answer 

(I used E to represent earlobes) I think his genotype is Ee