Could you tell me if these are good choices for the exercise, knowing that 'a' is the correct one? If 'a' is a wrong explanation, could you tell me one please?
Thanks in advance
Circle the letter that indicates the correct function of the underlined word.
Even thoughsome people dream about moving somewhere else, most people are happy with their hometowns.
a. It introduces a contrast with the next sentence.
b. It is used to connect clauses that contain ideas of cause and effect.
c. It gives a reason.