Venue of Olympic Games is decided by which of the following body?

The correct option is International Olympic Committee.

The International Olympic Committee (IOC) is the supreme authority of the Olympic Movement. Founded in 1894, it is a non-governmental independent organization based in Lausanne, Switzerland.

One of the primary responsibilities of the IOC is to select the host city (venue) for both the Summer and Winter Olympic Games. Members of the IOC vote to decide the venue, typically seven to eight years before the games are scheduled to take place, following a rigorous bidding and evaluation process.