Question

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

Answer 1

The answer is C) The French Revolution.

Answer 2

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.