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]: This compound promotes the dephosphorylation and activation of enzyme HMG-CoA to favor cholesterol synthesis and a phenylalanine for leucine substitution at residue B25 results in its "Chicago" variety. Its biosynthesis involves an excision of the C-peptide, and the compound functions by binding to tyrosine kinase receptors on cell surfaces. Sanger's improvement upon the methods of Edman degradation involved its sequencing, and its production occurs primarily in beta cells on the islets of langerhans. For ten points, name this pancreatic counterpart of glucagon used to regulate blood sugar, deficiencies of which are found in sufferers of diabetes.  
[EX A]: Science

[EX Q]: One conflict in this country saw the Duke of Guise fight for the throne with two other men named Henry. This country signed the Evian Accords in 1962 with Algeria. In the 8th century, this was the site where Charles Martel was victorious at the Battle of Tours. This country was led by (*) Nicolas Sarkozy until the 2012 elections. For 10 points, name this country once led by Charles de Gaulle.
[EX A]: History

[EX Q]: This ruler's first wife was Eudoxia Lopukhina, but he forced her to become a nun ten years after their marriage. The Bulavin Rebellion occurred during this man's reign. This ruler gave a portrait of himself as a gift to William III, and established his country's first naval base, which was named Taganrog. This ruler went on a tour in the West with his "Grand Embassy," and upon his return, he imposed a beard tax on his people. He won the Battle of Poltava, forcing Charles XII to flee into the Ottoman Empire. For 10 points, name this Russian tsar who won the Great Northern War and built St. Petersburg.
[EX A]:
History