The correct response is: The Confederacy offered the Crittenden Compromise.
However, it is worth noting that the Crittenden Compromise was actually proposed by Senator John J. Crittenden in an attempt to prevent the secession of southern states and to avoid the Civil War. The Confederacy itself did not specifically offer this compromise; rather, it was a last-ditch effort to keep the Union intact amid rising tensions. The other options do not accurately represent actions taken by the Confederacy during this period.