Final answer:
Echoing footsteps can be significant in literature and physics, as they can create suspense or demonstrate the phenomenon of echo.
Step-by-step explanation:
An echoing sound can be significant in different contexts. In literature, echoing footsteps can be used to create suspense or a sense of mystery. For example, in the excerpt from a story, the echoing footsteps suggest something eerie may be happening in the mansion. In physics, echoing footsteps demonstrate the phenomenon of echo, where sound waves bounce off surfaces and return to the listener's ears. This can be observed both indoors and outdoors