The archaeologists’ term “correlated age” means a. the calendar age of an artifact. b. the actual age of an artifact. c. the age of an artifact determined by instinct. d. the age of an artifact in relation to other objects.

The archaeologists' term "correlated age" means: D) The age of an artifact in relation to other objects.
For instance, a method archaeologists might use in trying to date an artifact might be dendrochronology. Archaeologists have been known to examine and date wooden structures based on the tree ring patterns seen in the wood of those structures. They will also correlate with geological strata and fossils found at a site.