27. Haydn developed the string quartet from the eighteenth century divertimento, giving more substance to the light, popular form and scoring it for two violins, a viola, and a cello. His eighty-three quartets, written over the course of his creative lifetime, evolved slowly into a sophisticated form. Together they constitute one of the most important bodies of chamber music literature.

Determine which of the following passages are arguments. For those that are, identify the conclusion. For those that are not, determine the kind of nonargument.