It is inadvisable to go swimming when you have a cold.
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.
It is inadvisable to go swimming when you have a cold.
A. You must go swimming when you have a cold.
B. You needn't go swimming when you have a cold.
C. You shouldn't go swimming when you have a cold.
D. You might go swimming when you have a cold.