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 structure does not function correctly in those with Stargardt disease, and certain cells in the capillaries of this structure can cause Scheerer's phenomenon. Muller glial cells found in this structure can dedifferentiate into multipotent progenitor cells, and Tay-Sachs disease is often diagnosed by a red spot on it. This structure receives oxygen from the choroid coat, which separates it from the (*) sclera. This structure's most sensitive region is the fovea, which is located at the center of its macula. Vitamin A is necessary for the function of this structure, which has a "blind spot" where it connects to the optical nerve. Rods and cones are found in, for ten points, which inner layer of the eye that sends optical signals to the brain
[A]: Science


[Q]: One ruler of this name employed the general Aleksy Khvost in his war against Suzdal and Novgorod, and became known as ""the red. "" In addition to that father of (+) Dmitri Donskoy, this name was borne by the man who overthrew Alexander of Tver and became rich by collecting tribute on behalf of the Golden Horde, acquiring the nickname "moneybag." The (*) third ruler of this name stopped vassalage to the Horde and was known as "the great." For 10 points, give this name for several princes of Muscovy, including the first to take the title of Russian tsar, the fourth one known as "Grozny" or "the terrible."
[A]: History


[Q]: This man's only extant wooden sculpture is a crucifix found at the Santo Spirito, at whose hospital this artist studied corpses. He sculpted the Dying Slave and Rebellious Slave for a room that also contains a horned depiction of Moses. Speculation that Solari was the actual sculptor inspired this man to carve his name on a sash in one of his works. This sculptor who worked on Julius II's tomb also made a seventeen-foot tall depiction of a naked man with his left hand near his chin. For 10 points, name this Italian artist who sculpted several Piets and a marble David.
[A]:
Fine Arts