The chimney _____ is the top element of a masonry chimney.

The term "crown" refers specifically to the top portion of a masonry chimney, which serves several important functions. Primarily, the crown is designed to protect the chimney structure from water infiltration, which can lead to deterioration over time. It typically slopes away from the flue to direct water runoff, preventing pooling on the surface. Additionally, the crown can help to prevent debris and animals from entering the chimney, enhancing safety and efficiency. Understanding the role of the crown is vital for appreciating how it contributes to the overall integrity and functionality of the chimney.

The other terms listed, such as "cap," "flue," and "lintel," refer to different parts of the chimney or its structure. The cap is a covering that sits on top of the chimney, but it is distinct from the crown, which is the masonry at the top. The flue is the passage inside the chimney through which smoke and gases escape, and the lintel is a horizontal support above the fireplace opening that helps bear the weight of the structure above. Each of these components has its unique purpose in chimney construction and function, which is essential knowledge for a home inspector.