Answer:
The figure of speech used in the line "in bleak and bitter cold" is personification. The adjectives "bleak" and "bitter" are used to describe the cold, giving it human-like characteristics and making it seem more harsh and unforgiving. The adjectives also have connotative meanings, with "bleak" suggesting a sense of hopelessness and "bitter" evoking feelings of anger or resentment. This gives the line a stronger emotional impact and emphasizes the harshness of the cold.