Final answer:
The answer to the question is A) Finial, which is an upright ornament at the eaves of a tile roof used to conceal the foot of a row of convex tiles.
Step-by-step explanation:
The correct answer to your question is option A) Finial. A finial is an upright ornament found at the eaves of a tile roof, and its purpose is to conceal the foot of a row of convex tiles that cover the joints of the flat tiles. Finials are often decorative and serve both to complete the aesthetic of the roofline and to protect the underlying structure of the roof by helping to deflect water and other elements away from the tile joints.
While a dormer is a window projecting from a sloping roof, a corbel is more related to masonry work, and a gargoyle is a carved stone creature designed to convey water away from a building. The term pediment is associated with the triangular space forming a gable on classical architecture, corbeled arch and dome refer to structures built with layers that overhang each other, and coffers are the indented squares in a ceiling. These terms are all significant in architecture but do not specifically describe an ornament at the eaves concealing tile joints like a finial does.