Which, if any, of the following phenotypes has the highest fitness in modern humans (homo sapiens)? light colored skin, assuming the skin color has a genetic basis tanned skin, assuming the person is born producing pheomelanin skin that produces pheomelanin skin that produces eumelanin it is impossible to answer this question given the information in the question stem

c

explanation:

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

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