What can the presence of glacial boulders or erratics in a region presently having other than glacial climate tell us?

Options:

1. The region was glaciated at the time of formation and deposition of these erratics.
2. The region is currently experiencing glacial climate.
3. The region is likely to experience glacial climate in the near future.
4. The presence of glacial boulders or erratics in a region presently having other than glacial climate has no significance.

Correct Answer