The third quatrain extends beyond the descriptions of sight and smell with descriptions of sound.
Answer: Option C.
Step-by-step explanation:
The first and second quatrain are about the description of physical appearances of the mistress. Shakespeare depicts how the lips, breasts, and hair of her mistress are. How she smells and so on. In the third quatrain, the poet moves from description of sight and smell to the description of sound where he introduces the readers to the voice of the mistress. He says that the mistress don’t have a musical voice. She speaks normally. The poet also illustrates how the mistress walks, which is also quite normal, she walks using her feet to get around.