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]: The Fraunhofer lines of the Sun's electromagnetic spectrum contain a D-line, sometimes known as a ""doublet,"" produced by transitions in this element's family but traditionally named after this element. This metal is currently made using the Downs Cell. When it is used as a coolant in nuclear reactors, the radioactive 24 isotope of this element is formed. It produces a bright (*) yellow flame when heated. This is the second-lightest alkali metal after lithium. For 10 points, identify this metal whose chloride is table salt.
[EX A]: Science

[EX Q]: The last thing he wrote before his suicide was a story entitled "Gleanings From" his most famous work, the longest of his "palm-of-the-hand" stories. David Henry Hwang wrote this man into a theatrical adaptation of this author's House of the Sleeping Beauties, written after his novel about the twin daughters of kimono salesmen, The Old Capital. Other novels by him deal with the six-month contest between Ottake and Shusai, and with the love of Shimmamura for a northern geisha. For 10 points, name this Japanese author of The Master of Go and Snow Country.
[EX A]: Literature

[EX Q]: When these structures are wounded, they are patched up by peroxisome-dense double membranous microbodies named for Woronin. The growth of these structures are controlled by organelles called spitzenkorpers. These structures are made up of individual cells that are divided by septa. Yeasts are unicellular, and thus do not have these structures. For 10 points, name these branching filaments that collectively form the mycelium in fungi.
[EX A]:
Science