Option 1 -> "Received an inspiration" indicates a sudden idea/realization, and "eminently diggable" means highly worthy of archaeological excavation, suggesting great potential.
Option 2 -> "Diggable" here refers to archaeological worthiness, not the physical ease of digging soil - this is a literal misinterpretation of the term.
Option 3 -> The phrase "received an inspiration" suggests a new discovery/insight, not that the site was already culturally famous or well-known.
Option 4 -> "Eminently diggable" conveys strong confidence in the site's potential, not uncertainty about its historical significance.
Hence, Option 1 -> The archaeologist's "inspiration" represents a scholarly intuition that Malgudi held unexplored historical treasures, which aligns with his character as someone who "had torn up the earth in almost all parts of India" seeking valuable historical information -> correct