Vetti was

Explanation: Vetti translates to "forced work." Under the Chola monarchy, this was a sort of tax. The Vetti tax wasn't paid in cash, but rather by forced labor. Farmers were required to labor for free of charge for the monarch or the owner of their community under this tax.

Final Answer: Hence, the correct option is (A) i.e, a tax paid in the form of forced labour.