The correct answer is B. ". . . the trees unloose / their soft arms . . ."
Step-by-step explanation:
The term personification refers to a common literary device and figure of speech that consist of providing, objects, plants, animals and other non-human or inanimate entities with features or qualities that are exclusively human including emotions, feelings, gestures, thoughts, among others. This is commonly used to represent abstracts ideas or represent human features as in the case of fables which commonly use animals or plants to depict human values and behaviors. Considering this, the line that includes an example of personification is "... the trees unloose / their soft arms . . ." as trees do not have arms and therefore and not unloose their arms, this means the author of this line had given trees a human feature (personification) to represent the branches of the trees falling.