The correct answer is D. Comparing prehistoric sites in Telangana with other regions can reveal trade networks, migration patterns, cultural similarities and differences.
Trade networks can be revealed by comparing the types of artifacts found at different sites. For example, if a site in Telangana has a lot of artifacts that are also found at sites in other regions, it suggests that there was trade between those regions.
Migration patterns can be revealed by comparing the distribution of artifacts at different sites. For example, if a type of artifact is found at a site in Telangana and then later found at a site in another region, it suggests that people from Telangana migrated to that other region.
Cultural similarities and differences can be revealed by comparing the types of artifacts found at different sites, as well as the way that the artifacts are used. For example, if two sites have similar types of artifacts but the artifacts are used in different ways, it suggests that the two cultures were different.
In conclusion, comparing prehistoric sites in Telangana with other regions can reveal a lot of information about the history of the region. This information can be used to learn about trade networks, migration patterns, cultural similarities and differences.