Answer:
Born into slavery in Maryland, Harriet Tubman escaped to freedom in the North in 1849 to become the most famous "conductor" on the Underground Railroad. Tubman risked her life to lead hundreds of family members and other slaves from the plantation system to freedom on this elaborate secret network of safe houses.
A critical analysis essay aims to review or to critique something and when you write one you should always use FORMAL (option C) language.
In the second question you want to find the best option that persuades someone to eat tortillas, thus you should use the word ENHANCE (option A), because it means tortillas will improve the flavor or the quality of any dish. In other words, the other options are saying tortillas can be eaten with any dish and that it'll taste good, but if you use enhance, you are saying tortillas will make any dish taste better, which is a persuasive argument.