The significance of meat eating for future human evolution was enormous. Not only did it provide a secure source of high quality protein, but as an accidental by product, it made possible the development of larger brains. The nutritive demands of nerve tissue are high-higher in fact than the demands of the other types of tissue in the human body. One can meet these demands on a vegetarian diet, but the overall nutritive value of a given amount of such food is less than that of the same amount of meat. William A. Haviland, Cultural Anthropology, 5th ed.
A) Argument; conclusion: The nutritive demands of nerve tissue ... human body.
B) Argument; conclusion: Not only did it provide a secure source ... larger brains.
C) Nonargument.
D) Argument; conclusion: The significance of meat eating ... was enormous.
E) Argument; conclusion: One can meet these demands ... amount of meat.

Question

Quizplus · Accepted Answer

The passage presents an argument that meat eating had enormous significance for future human evolution because it provided a secure source of high-quality protein and made possible the development of larger brains. The conclusion of the argument is that the overall significance of meat eating for human evolution was enormous.

The Significance of Meat Eating for Future Human Evolution Was