Final answer:
Le Corbusier's role in the plan of Chandigarh was a lead architect.
Step-by-step explanation:
Le Corbusier's role in the plan of Chandigarh was a. Lead architect. He was the primary architect and urban planner responsible for designing the city of Chandigarh in the 1950s. Le Corbusier's modernist principles, such as functionalism and the use of concrete, shaped the architectural style of the city.