In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

[EX Q]: Lin and Shu proposed the density-wave theory to explain how the structure of these entities is sustained. The most accurate method for measuring the distances to distant ones uses a relation between their maximum rotational velocity and absolute magnitude, which is known as the Tully-Fisher method. They are generally blue because of their high content of old stars, and one type of them features arms that emanate from each end of a namesake structure. They have discs like the lenticular type, but contain much more angular momentum than the elliptical type. FTP name these galaxies, some of which are barred, including the Milky Way.
[EX A]: Science

[EX Q]: One poem by this author claims that "there's nothing sentimental about the technique of writing," which can be mastered by "any young man with a mind bursting to get out." This author argued that "The United States without self- seeking has given more of material help to Europe and to the world than have all other nations of the world put together in the entire history of mankind" in the chapter "Jacataqua," from a book which contains short biographies of people like Eric the Red, Walter Raleigh, and Daniel Boone. Another book by him begins with the section "The Delineaments of the Giants," which mentions "blank faces of the houses and cylindrical trees" to reinforce that there are "no ideas but in things," and describes a place that  "lies in the valley under the Passaic Falls, its spent waters forming the outline of his back." For 10 points, name this author of In the American Grain and an epic about his New Jersey hometown, Paterson.
[EX A]: Literature

[EX Q]: In Egypt, this deity's cult was governed by Ptolemy II Philopator, who was said to be a follower. In 186 BCE, the cult of this deity was "discovered" in Rome amid scandal following testimony by Hispala and Aebutius, and then suppressed. This god was associated with many others, including the Phrygian Sabazios and Zagreus of the religion of Orpheus, who was said to have started his cult. In one myth, he turned a group of pirates who kidnapped him into dolphins, and he was known as twice-born as he was delivered from Zeus's thigh after that god had taken him from the burned corpse of his mother, Semele. FTP, name this god of wine and revelry, often known as Bacchus
[EX A]:
Social Science