Answer: A) Metaphor.
Explanation: a metaphor is a figure of speech that consists in making a direct comparison between elements that aren't obviously related, in order to create an image in the reader's mind. In the given sentence, we can see a clear example of a metaphor that compares Janet's eyes to two bright emeralds (without using the words "like" or "as" to make the comparison), so the correct answer is option A.
A. The verb tense is always present tense in this sentence unlike the others.
They happen infrequently during the full moon
