The correct answer is: A) Kaimal of Edappally.
The Kaimal of Edappally was a feudatory lord who famously pledged allegiance to the Portuguese and assisted in their conquest of Kochi. He was a powerful and influential figure in the region, and his decision to support the Portuguese was a major turning point in the history of Kerala.
The Paliath Achan was a chief minister of the Cochin kingdom. He was a loyal and trusted advisor to the king, and he played a key role in the kingdom’s affairs. However, he was opposed to the Portuguese, and he tried to prevent them from gaining control of Kochi.
The Raja of Kayamkulam was a powerful ruler who controlled a large territory in the southern part of Kerala. He was initially friendly towards the Portuguese, but he later turned against them and fought against them in several battles.
Unniraman Koviladhikari of Kozhikode was a local chieftain who ruled over a small territory in the northern part of Kerala. He was a vassal of the Zamorin of Calicut, and he fought against the Portuguese on behalf of the Zamorin.
The Kaimal of Edappally was the only one of these four figures who pledged allegiance to the Portuguese and assisted them in their conquest of Kochi. The other three figures were either opposed to the Portuguese or fought against them.