The correct answer is B. They have beautiful bodies.
Explanation
The word "Although" is a contrast linking word, therefore the phrase must be completed with a sentence of opposite meaning. As a consequence, if the first sentence speaks of a negative physical attribute "Although most black women don't have a pretty face", the most appropriate for the second sentence would be a sentence in which a positive physical attribute stands out "They have beautiful bodies." So, the correct answer is B.
Each guide was helpful, but we forgot to thank them. You should use the plural pronoun, because we don't know whether the guides were only males, or females, or whether there were both sexes.
