Read this passage from the article. Which sentence is the main idea? Harriet Beecher Stowe cared deeply about human rights. Her family was active in the Underground Railroad, helping slaves escape to freedom in the North. (The Underground Railroad was a system formed by a group of people who were against slavery. These people helped escaped slaves secretly reach the North.) For 18 years she observed a slave-holding community in Kentucky just across the Ohio River from where she lived in Cincinnati. She didn’t like what she saw.

A.
For 18 years she observed a slave-holding community in Kentucky just across the Ohio River from where she lived in Cincinnati.

B.
Her family was active in the Underground Railroad, helping slaves escape to freedom in the North.

C.
Harriet Beecher Stowe cared deeply about human rights.

D.
She didn’t like what she saw.
pls answer this is worth 15points