The speaker tries to compare herself to nature (a form of simile) because she is trying to communicate her consistency and strength just as the tides and moon do. The correct answer, thus, is B.
A Simile is a literary device - a figure of speech that compares a thing or a person with another.
The most common example is Jade is as brave as a lion.
See the link below for more about similes:
https://brainly.com/question/1057980