1.In addition to writing about everyday life, some realist writers
A. examined social issues through their characters.
B. contributed to advancing scientific theories.
C. emphasized feelings and emotions in their poetry.
D. wrote scientific essays about nature.

A. examined social issues through their characters.

Explanation:

The realist writers refers to a group of writers which emerged in the middle of 19th century. Rather than focusing on drama, mythology, or mister in their writing, they focused on real social issues that caused a problem in Western societies after industrial revolution.

The Social issues that these writers covered varied from politics, culture, or economic problems. Such as the poor treatment that the workers receive from factory owners, corrupt government officials, women's suffrage, etc.

the american revolution was by the middle and upper class, and the french was by the lower and middle class.