The correct answer is option C: Arikamedu.

Arikamedu is an archaeological site located near the city of Pondicherry in India. It was an important trading port during ancient times and has been known for its extensive trade connections with the Roman Empire. The discovery of Roman lamps, glassware, and gems at the site provides evidence of the flourishing trade between Arikamedu and the Romans.

**Trade with the Roman Empire:**
Arikamedu was a significant trading center between the 2nd century BCE and the 2nd century CE. The Roman Empire had a great demand for luxury goods from India, such as spices, textiles, gems, and precious metals. Arikamedu served as a major port where these goods were exchanged for Roman products like wine, glassware, and pottery.

**Roman Lamps:**
The discovery of Roman lamps at Arikamedu suggests that these objects were imported from the Roman Empire. Roman lamps were commonly made of terracotta or bronze and had a distinctive shape and design. The presence of these lamps at Arikamedu indicates that they were brought there through trade and were used by the local population.

**Glassware:**
The finding of Roman glassware at Arikamedu provides further evidence of trade with the Roman Empire. Roman glassware was highly valued for its quality and craftsmanship. It was used for various purposes, including storage containers, drinking vessels, and decorative items. The presence of Roman glassware at Arikamedu suggests that it was imported and used by the people living in the region.

**Gems:**
The discovery of gems at Arikamedu indicates that precious stones were also part of the trade between Arikamedu and the Romans. Gemstones like diamonds, rubies, emeralds, and sapphires were highly sought after by the Romans for their beauty and value. The presence of these gems at Arikamedu suggests that they were imported from India and traded with the Romans.

**Conclusion:**
In conclusion, the discovery of Roman lamps, glassware, and gems at the archaeological site of Arikamedu provides strong evidence of the trade connections between Arikamedu and the Roman Empire. These artifacts demonstrate the exchange of goods and cultural influences between the two regions during ancient times.