Read this excerpt from "Marine Mammals.” Marine mammals are classified into four different groups: cetaceans (whales, dolphins, and porpoises), pinnipeds (seals, sea lions, and walruses), sirenians (manatees and dugongs), and marine fissipeds (polar bears and sea otters)

–"Marine Mammals,"
National Oceanic and Atmospheric Administration

Which best describes how the author’s use of classification helps to guide the reader’s understanding?

A. It provides details about marine mammals.
B. It is used to define the types of marine mammals.
C. It divides the larger topic of marine mammals into smaller parts.
D. It allows the author to provide a description of each type of marine mammal.

How is dr. lanyon characterized in the excerpt? as friendly as arrogant as wise as mournful

What type of writing is demonstrated in this excerpt by general philip henry sheridan? at once i set about preparing for the examination which precedes admission to the military academy, studying zealously under the direction of mr. william clark; my old teachers, mcnanly and thorn, having disappeared from somerset and sought new fields of usefulness. the intervening months passed rapidly away, and i fear that i did not make much progress, yet i thought i should be able to pass the preliminary examination. that which was to follow worried me more and gave me many sleepless nights; but these would have been less in number, i fully believe, had it not been for one specification of my, outfit which the circular that accompanied my appointment demanded. this requirement was a pair of "monroe shoes." now, out in ohio, what "monroe shoes" were was a mystery—not a shoemaker in my section having so much as an inkling of the construction of the perplexing things, until finally my eldest brother brought an idea of them from baltimore, when it was found that they were a familiar pattern under another name. a. research essay b. persuasive essay c. biography d. memoir

The story of the uncle’s madness is central to a servant to servants which lines tells the most haunting part of the story