Music appreciation: Which of the following world events took place during the classical era?

A. The Industrial Revolution B. The Reformation C. The French Revolution D. The Second World War

This question is poorly written because there are actually two correct answers: A. the Industrial Revolution and C. the French Revolution.

Classicism is the era which lasted throughout the 18th century and for a while in the 19th (1750 - 1825). The Industrial Revolution began in 1760 and lasted for many years, and the French Revolution began in 1787, so as you can see, both answers are correct.

The answer is C) The French Revolution.