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

Answer: Option D

The Battle of Wandiwash was a decisive battle in India during the Seven Years' War. The Count de Lally's army, burdened by a lack of naval support and funds, attempted to regain the fort at Vandavasi, now in Tamil Nadu. This was the Third Carnatic War fought between the French and the British.