Another name for independent clause is Main clause so it's C
Answer:
Thomas Garrett is best known for his tireless efforts in behalf of the abolition of slavery. His first endeavor started at age twenty-four, by rescuing a kidnapped, free Black woman who was to be sold into slavery in the South
Explanation:
this might help
They are treated as children, rather than as knowledgeable individuals, and are basically taken care of until they're killed off