Answer:
In the passage, the flat character is Old Daniel.
Step-by-step explanation:
A flat character is a character who lacks depth and development, often representing a stereotype or a one-dimensional personality. In the passage, Old Daniel is described as a "half-witted" and "vagrant" man who is known for his peculiar behavior and appearance. The narrator does not provide any further insights or development into Old Daniel's character, and he remains consistent in his portrayal throughout the passage. This lack of depth and development makes Old Daniel a flat character in the context of the passage.