An important port of the eastern coast during the Gupta period was _______________
A) Kalyan
B) Tamralipti
C) Broach
D) Sopara

Hint: The Gupta period Flourished around the 3rd century CE. It was one of the greatest empires that ever existed in India. The Gupta. Is also considered as the golden period by a lot of historians.

Complete answer:
Let us analyze the given options:
Option A) Kalyan- is incorrect. Kalyan was once a famous historical port. It is on the west coast. Therefore, it was not an important port of the eastern coast during the Gupta period. Hence, this option is incorrect.
Option B) Tamralipti- is correct. Tamralipti was an important port city during the Gupta period. It was also regarded as a Buddhist kingdom. The port of Tamralipti was situated on the eastern coast and was an important port during the Gupta period. Hence, this option is correct.
Option C) Broach- is incorrect. Abroach is a small place situated in Gujarat. Its port is on the western coast and hence it was not an important port during the Gupta period. Therefore, this option is incorrect.
Option D) Sopara- is incorrect. Sopara was a port town in the part located in Maharashtra. It was situated on the western coast. Hence, this option is incorrect.

Therefore the correct answer is option ‘B’.

Note:
- Tamralipti was a city in the ancient Bengal region.
- It was also visited by Xuanzang in 639 AD.
- It was the only port that existed on the eastern coast. Rest all the ports were on the western coast. Therefore, it was of great importance.