The correct answer of the given question above would be option C. The sentence that is inverted with the subject underlined is: There was a big group here last night. (Group is underlined.) The subject of this sentence is the word "group".
he finds a shelter from the Blizzard
The preposition in this case is From while the prepositional phrase is From China as it consists of the preposition from and the noun China.
Answer:
The logical answer would be footstep, but since that's not it, the only other thing I could think of would be breath.