Option d is the correct answer. The ancient site from which information has been gathered regarding brisk trade relations between India and Rome, during the early centuries of the Christian era, is Arikamedu. Important Tips Arikamedu: Arikamedu is an archaeological site located on the banks of the Ariyankuppam River in Puducherry. It was a major port and trading center that had contacts with the Roman Empire, as well as other regions such as Egypt, Greece, Persia, and China. The site was excavated by various scholars, such as Mortimer Wheeler, Vimala Begley, and Jean-Marie Casal, who found evidence of Roman amphorae (jars), coins, pottery, beads, glassware, terracotta figurines, and other artifacts.