TASK DEFINITION: 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.
PROBLEM: Late in his reign, this king put down revolts led by Ashina of Elam and Nidintu-Bel of Babylon. Other rebellions during his rule include one caused by his brother Artaphernes's response to a request for help from Naxos, leading to an uprising by Aristagoras of Miletus. This man also defeated the Margian leader Frada, as well as a usurper called Gaumata who may have impersonated his brother Bardiya. Those feats are recorded in the trilingual Behistun Inscription, and as king, this man notably succeeded the conqueror of Egypt, Cambyses II. He is best known, however, for ordering an invasion that ended with a decisive defeat by the general Miltiades at the Battle of Marathon. For 10 points, identify this Persian ruler, the father of Xerxes I.

SOLUTION: History

PROBLEM: A tree can be seen in the background of this work through a window bisected by a stone column. Beneath the window lies a series of chests, one of which is being searched through by a child in white. The childs caretaker, carrying a large gold and blue garment, looks after the child while on the right a small brown and white dog sleeps peacefully on a couch. Tapestries line the walls near the chests and green and beige tiles line the floor, and a green curtain obscures the back left portion of the room. On a red couch in front of the curtain rests the title character, who holds pink flowers in her hand as she stares at the viewer. For 10 points, name this painting by Titian.

SOLUTION: Fine Arts

PROBLEM: The Schlenk equilibrium, which can be affected by the presence of dioxane, describes the stability of these compounds, whose synthesis can be improved by the addition of mercuric chloride amalgamates. They react with nitriles to form intermediate imine anions, and dry carbon dioxide can be bubbled through them to create carboxylic acids, which themselves do not form an addition product with these. In what is sometimes called their namesake's reaction, they act as strong nucleophiles to form tertiary or secondary alcohols from ketones or aldehydes. For 10 points, name these compounds formed by reacting an alkyl halide with magnesium, named for a French guy.

SOLUTION:
Science