Answer: E.) emphasize the disbelief with which he expects the audience to react to his argument
Explanation: Writers use certain design features, including italics, boldface, and all capitals (“all caps”), to create emphasis. The author uses all capitals at the beginning of the fourth paragraph (“WHAT . . . people?”) to simulate the outrage he imagines his audience will express in response to his thesis (“there never has been an artistic age, or an artistic people, since the beginning of the world”). The use of all capitals suggests the vigorous nature of the anticipated objection from the audience, which is followed immediately by the likely counterexample (the Greeks) to his argument. By emphasizing in this manner the disbelief his argument is likely to invite, the author signals his awareness of its provocative nature.