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]: In studying this structure, Elizabeth Gould showed that dendrite spine density and estradiol levels peaked together. A circuit of structures interconnecting this structure and the cortex was proposed by James Papez, and axon collaterals named for Schaffer innervates neurons in the CA1 portion of this structure. Neurons that respond only when an animal is in a certain region of space, known as place cells, are located in this structure. It consists of two sheets of neurons called Ammon's horn and the dentate gyrus, the first of which sends axons into the fornix. Connected ventrally and laterally to the olfactory cortex, this structure inhibits CRH release. For 10 points, name folded structure of the limbic system that plays a major role in learning and memory.
[A]: Science


[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.
[A]: Science


[Q]: One of this man's works depicts his face against a black background with bones along the bottom edge, his Self Portrait with Skeleton Arm. Other works of his include one where two large women sit in front of a shadowy figure and another which depicts various people in dark dress mourning after his sister's death in a sickroom. Those works were both included in his Frieze of Life series. Another work features two black figures to the far left, and the central figure stand on a bridge under an orange and red sky and clutches its face, with eyes and mouth wide open. For 10 points, name this Norwegian painter of The Scream.
[A]:
Fine Arts