Explain simply why Zoroastrians is the correct answer to: Passage: A Dakhma (Persian: دخمه; Avestan: lit. "tower of silence"), also called a Tower of Silence, is a circular, raised structure built by Zoroastrians for excarnation -- that is, for dead bodies to be exposed to carrion birds.

Question: Based on this passage, tower of silence is associated with which religion?. Explanation:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
This is the relevant information: "tower of silence" ), also called a Tower of Silence, is a circular, raised structure built by Zoroastrians for excarnation -- that is, for dead bodies to be exposed to carrion birds.