The decisive battle of the third Carnatic War was waged between the French and the British at _______.

The correct option is D Wandiwash
The outbreak in 1756 of the Seven Years' War in Europe resulted in renewed conflict between French and British forces in India i.e the Third carnatic war. In 1760 AD in the Battle of Wandiwash, Sir Iyre Coote, the British general defeated the French general Count Lally. The war concluded with the signing of the 1763 Treaty of Paris, which returned Chandernagore and Pondichéry to France.