Final answer:
The phrase from the poem 'Sea Fever' describes the intense and biting quality of the wind, comparing it to a sharp knife. Option B is correct.
Step-by-step explanation:
The phrase "the line was the wind's like a whetted knife" from the poem 'Sea Fever' vividly describes the sharp, cutting sensation of the wind. The imagery conjured by this metaphor indicates how the wind can slice like a finely sharpened blade, emphasizing its force and potentially chilling effect.
The term 'whetted' refers to the process of sharpening a blade, thereby reinforcing the idea of the wind's keen and biting nature.
Sooption B is correct.