I would probably answer with B, because facial expressions would tell if the reader is pleased, annoyed, saddened, ect. by the content :)
As Mother drove, Father studied the road map. (B)
<span>B) It suggests that the author seriously doubts whether the thermometer pill can keep all the promises it claims to make. </span>
Its subject matter makes it similar to a nocturne.
Hope that has help it the best way i can explain it