Given a scientific passage and an answer, generate a question for the given answer.

Passage: Figure 39.9 The trachea bifurcates into the right and left bronchi in the lungs. The right lung is made of three lobes and is larger. To accommodate the heart, the left lung is smaller and has only two lobes. Answer: trachea

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
What bifurcates into the right and left bronchi in the lungs?