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.

[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.
[A]: Science

[Q]: Some of this man's later works were created for television, including a score for the 1942 adaptation of his opera The Pilgrim's Progress as well as an adaptation of his seventh symphony for Scott of the Antarctic. His first choral symphony is a setting of parts of five Walt Whitman poems, including "A Song For All Seas, All Ships. " This mans operas also include one featuring a prize fight between the title character and John the butcher, as well as a direct adaptation of a J.M. Synge play. Hugh the Drover and Riders to the Sea were composed by, FTP, which British composer, who also created The Lark Ascending, the London Symphony, and Fantasia on a Theme of Thomas Tallis
[A]: Fine Arts

[Q]: Azlactone intermediates are formed when alpha-amino acids react with acetic anhydrides to produce these in the Dakin-West reaction, while the large ring alicyclic type are produced by the Ruzicka synthesis. Aromatic forms of these are created using organic nitriles in the Houben-Hoesch reaction, and also form from esters in the Fries rearrangement. The methyl type produces a positive result in the iodoform test, and unlike a similar compound, these almost always give a negative result when reacted with Tollens' reagent. Produced by the oxidation of secondary alcohols, for 10 points, name this type of organic compound consisting of a carbonyl attached to two carbon atoms, whose simplest example is acetone.
[A]:
Science