TASK DEFINITION: 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.
PROBLEM: This man reformed the fyrd militia system so that it fought in shifts, allowing for the creation of a standing army without disrupting agriculture. In addition to establishing the burhs system of forts, this man built a secret military base on the swamp island of Athelney. This mans advisors included Bishop Asser, who wrote an early biography of him. This author of the so-called doom book won control of all territory west of Watling Street when he won the Battle of Edington against Guthrum the Old. Apart from translating many religious works into English, he is best known for ending the Danegeld. For ten points, name this King of Wessex, the only English monarch with the epithet the Great.

SOLUTION: History

PROBLEM: Two pianos and six percussionists are featured in one section of its third part, which opens with a chorus of boys who sing that Cupid is flying everywhere. The following section of this work features three glockenspiels and is known as "Blanziflor and Helena. "  Earlier sections include "On the Lawn," which features the German "Reie" dance, and "In Springtime. "  Originally staged in 1937 by the Frankfurt Opera, it begins and ends with a section about the "Imperatrix Mundi. "  FTP, name this orchestral work notable for its blaring "O Fortuna" section, which was based on a medieval manuscript and written by Carl Orff.

SOLUTION: Fine Arts

PROBLEM: Some of these devices use exciplexes [EKS-ih-pleks-es], which are sometimes referred to as excited   dimers [DY-mers], or excimers [EKS-ih-mers]. Those substances disintegrate when they are in the  ground state, which means that a majority of them are in the excited state, a condition known as   population inversion. That population inversion takes place within the gain medium of these devices,  which is typically placed in an optical cavity. Early versions of these devices were monochromatic,  and all of them produce an output that is very coherent. Name these devices capable of producing a  very focused beam of light that can be used to read barcodes or DVDs.

SOLUTION:
Science