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]: This man told the story of the creation of the world to Hnossa while her mother was searching for her husband. Among the possessions of this mythological being, who lives in the Heavens Palace or Sky Mountain, includes the sword Hofund and his horse Gulltopp. The son of the nine daughters of Aegir, this god, with the nicknames of Vindhlr, meaning wind shelter, and Gullintanni, meaning golden-toothed, recovered Brisingamen after it was stolen from Freya. Even though he sacrificed an ear to drink from Mimir's well, this god has extraordinary hearing, which he uses to hear the grass grow. FTP, identify this Norse mythological figure who will blow Gjallahorn at Ragnarok, the guardian of Bifrost bridge.
[A]: Social Science

[Q]: Halogen addition to them creates a mixture of a 1-2 and 1-4 addition product. One preparation of them involves butane undergoing thermal dehydration. Another synthesis of the conjugated variety of this chemical group involves elimination of unsaturated alcohols and alkyl halides. They include a number of useful reagents, including ones named for Chan, Dane, Brassard, Rawal, and Danishefsky. In addition to the conjugated variety, they also occur in isolated and cumulated varieties. Conjugation energy guarantees that the conjugated form is the most stable. For ten points, what is this organic functional group whose 1,3 variety are a principal reactant in the Diels-Alder reaction, and which is characterized by a pair of double bonds.
[A]: Science

[Q]: The dihedral angles between these compounds can be represented using a Ramachandran plot and they are bound to enzymes called aaRS. They were created in an experiment that passed sparks through a flask containing water, methane, ammonia and hydrogen and are represented by a three nucleotide long codon. tRNA is so named because it transfer these compounds to the ribosome. These compounds were created in the Miller-Urey experiment and their only achiral member is glycine. For 10 points, name this group of compounds that form the building blocks of proteins.
[A]:
Science