Final answer:
To simplify the expression (125° + 352) + S, we add 125° and 352 to get 477°, and then add S to it.
Step-by-step explanation:
To simplify the expression (125° + 352) + S, we add 125° and 352 to get 477°, and then add S to it. So the answer is 477° + S (option B).