Which one of the following was a very important seaport in the Kakatiya kingdom ?

Lists Kakinada among intermediate and minor seaports on the eastern coast (modern description), giving a data point about its maritime role.

A student could combine this modern classification with a map and historical sources to check continuity of port importance from medieval to modern times for Kakinada.

States the Kakatiyas were the major power in Andhra in the 13th century, implying they controlled coastal Andhra where Kakinada is located.

Use the geographic fact that Kakinada lies in coastal Andhra to infer it was within Kakatiya sphere and then look for specific medieval port records or archaeology.

Gives a general pattern that South Indian kingdoms (e.g., Pallavas) had important seaports and active foreign trade networks.

Apply this general pattern to the Kakatiya context: if coastal Andhra participated similarly in maritime trade, Kakinada might have been significant—so check trade-route maps and medieval guild/inscriptional evidence for Kakinada.

Describes Kakatiya administrative/military structures (assignment of revenue/local control to Nayaks), indicating the kingdom exercised local governance that could include coastal ports.

A student could use this to look for inscriptions or revenue records naming Kakinada as a port under Kakatiya administrators.

Notes that certain administrative/military systems (palayakkarar-like) were practiced earlier in the Kakatiya kingdom, suggesting organized local control which often accompanies management of ports.

Combine this with knowledge of medieval port administration to search for evidence of Kakinada being managed or fortified in Kakatiya-period records.