The correct answer is letter C. Eugenics is the science of improving hereditary qualities. It came from the Greek word, eugenes, which means "well-born race, stock, kin." This is a practice of beliefs that aimed at improving the quality of genes of a particular human population. Much like the way that Spartans bred their offsprings where they made sure that only the best quality genes are present in their population.
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I would think, natural selection and alterations in species over time.
Researchers aboard Alvin discovered the presence of hydrothermal vents on the ocean floor.
A difference between coelom and Pseudocoelom is that the gut of a pseudocoelom is surrounded by the endoderm, and the gut of a coelomate is surrounded by the ectoderm. So your answer is D.
The group that includes human and their direct ancestors is called the hominids.
hope this helps, God bless!