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.
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Question: The highest point in this nation is Phou Bia, just south of the Plain of Jars on the Plateau de Xiangkhoang. Its eastern border is formed by the Annamese Cordillera, which run until meeting the Boloven Plateau in the south. These highlands are the source of many rivers, including the Ou, Kadong, Wa, Kong, and Banghiang, and flow past cities such as Muang Huang, Saravan, Phongsali, and Pakxe into the Mekong, which forms the western boundary with Myanmar and Thailand. FTP, name this landlocked southeast Asian nation with a capital of Vientiane.

Answer: Social Science


Question: Gravitational redshift was measured by Pound, Rebka, and Snider in Harvard's Jefferson Tower using this technique to detect a frequency shift of order one part in ten to the 14th. It can be used for precise studies of the Zeeman effect in nuclei. Iron 57 and tin 119 are two of the isotopes used in this type of spectroscopy due to narrow linewidths in their transitions. Before this technique, the large size of Doppler shifts relative to transition widths made nuclear spectroscopy problematic. It was discovered by its namesake when he was a graduate student at the Munich University of Technology. FTP, what is this effect in which a crystal lattice reduces recoil energy

Answer: Science


Question: genes coding for these molecules are purposefully mutated in a process called somatic hypermutation, and they sometimes undergo isotype switching. In a process discovered by Susumu Tonegawa, they are assembled by random selection of variable region, diversity, and joining segments, called V(D)J recombination. Both the nonspecific and specific type of these molecules are used in (*) ELISA. They enhance phagocytosis in a process called opsonization, and activate the binding of proteins C1 through C9 in the complement cascade. They fall into five major classes: G, A, M, D, and E. For 10 points, identify these bivalent Y-shaped proteins consisting of two light and two heavy chains, which recognize the epitopes of specific pathogens.

Answer:
Science