Answer: The answer is D: she has a heart of a stone.
She has a heart of a stone is an example of a metaphor.
Explanation:
Metaphor is a figure of speech that is used to compare two things that are not the same but have something in common. Metaphor's comparison is more indirect by that stating one thing is something else. Metaphor compares two things not because they actually are the same but for the purpose of comparison.
A metaphor is a comparison without using like or as. So we can already cross out B and C. So between A and D we can see that A is more of a direct statement. There is no comparison happening so letter D. would most likely be the answer.
