Hi,
The correct answer would be A. I think "The Sound of Music" is my all-time favorite musical.
I hope this helps!
Answer: A) personification: “mask thy monstrous visage.
Explanation: personification is a figure of speech that consists in giving human characteristics to nonhuman objects. Similes and metaphors are comparisons between elements that aren't obviously related (metaphors are direct comparison while similes use the words "like" or "as"). In the given excerpt we can see an example of personification in the line "to mask thy monstrous visage" (human action) this is referring to the cavern (nonhuman object).