One of the key commodities traded from Kerala in the historical period was:

Pepper
Silk
Gold
Coffee

The correct answer is A) Pepper.

Pepper was one of the most important commodities traded from Kerala in the historical period. It was used as a spice, a preservative, and a medicine. Pepper was also used as a form of currency.

Kerala is a state in India that is located on the Malabar Coast. It has a long history of trade and commerce. Pepper was one of the first commodities that was traded from Kerala. It was traded with the Romans, the Arabs, and the Chinese.

Pepper is a member of the Piperaceae family. It is a vine that grows in tropical and subtropical regions. The fruit of the pepper plant is a small, berry-like drupe. The drupe is green when it is unripe and turns red when it is ripe. The ripe drupe is dried and then ground into a powder.

Pepper has a strong, pungent flavor. It is used as a spice in many different cuisines. Pepper is also used as a preservative. It is used to prevent food from spoiling. Pepper is also used as a medicine. It is used to treat a variety of ailments, including indigestion, diarrhea, and flatulence.

Pepper was one of the most important commodities traded from Kerala in the historical period. It was used as a spice, a preservative, and a medicine. Pepper was also used as a form of currency.