What is the main idea of this paragraph?

"slave and free black parents kept their heritage alive by telling stories about their african ancestors. to slave children cope with slavery, older slaves told tales that often taught a lesson or made a joke on their white masters. they celebrated happy occasions with music and dance brought from africa. many foods eaten in colonial williamsburg had african roots."

a slaves kept their heritage alive.
b slaves made jokes about their masters.
c slaves had happy occasions too.
d slaves' ancestors brought recipes from africa.