Which statement supports this sentence?

Enslaved Africans and indentured servants were critical to the success of colonial farms.

a) Africans came to the colonies over the sea on boats.

b) Africans contributed to the foods and music of the colonies.

c) African culture is still alive and thriving in the South.

d) Africans tended the settlers' land and harvested crops.

d) Africans tended the settlers' land and harvested crops.