The type of analogy used in this sentence function analogy. Option D is correct.
Analogy is a literary device employed by authors in order to connect an unfamiliar or a new idea with common and familiar objects making it easier for readers to understand a new idea, which may have been difficult for them to comprehend otherwise. Analogies help increase readers’ interest as analogies help them relate what they read to their life. Through Analogy, the things, which are different from each other, are compared