Final answer:
Papyrus was the most abundant natural resource in ancient Egypt and was used for writing and preserving records.
Step-by-step explanation:
In ancient Egypt, the most abundant natural resource was papyrus. Papyrus is a writing material made from the fibers of a reed plant that grew along the banks of the Nile. It was used to produce scrolls and store records, and it played a significant role in preserving Egyptian myths, poetry, and historical records for thousands of years. Although other natural resources like limestone, sandstone, and gold were available in ancient Egypt, papyrus was the most abundant and widely used resource.