The correct answer is: A. Kumbh Mela
The Kumbh Mela is a mass Hindu pilgrimage that occurs every 12 years at one of four sacred sites in India: Haridwar, Allahabad, Nashik, and Ujjain. It is one of the largest religious gatherings in the world, with an estimated 100 million people attending the 2013 Kumbh Mela. The Kumbh Mela is a time for Hindus to bathe in the sacred rivers, to receive blessings from holy men, and to make offerings to the gods.
The Gangasagar Mela is a Hindu pilgrimage that takes place every year on the banks of the Ganges River at the confluence of the Ganges, Brahmaputra, and Meghna rivers. The Gangasagar Mela is a time for Hindus to bathe in the sacred waters of the Ganges, to receive blessings from holy men, and to make offerings to the gods.
The Jagannath Rath – Yatra Mela is a Hindu pilgrimage that takes place every year in the city of Puri in Odisha, India. The Jagannath Rath – Yatra Mela is a time for Hindus to worship the god Jagannath, to pull the chariot of Jagannath through the streets of Puri, and to make offerings to the gods.
The Pushkar Fair is a Hindu pilgrimage that takes place every year in the city of Pushkar in Rajasthan, India. The Pushkar Fair is a time for Hindus to bathe in the sacred waters of the Pushkar Lake, to worship the god Brahma, and to make offerings to the gods.
The Kumbh Mela is the largest and most important of these four fairs. It is held every 12 years at one of four sacred sites in India: Haridwar, Allahabad, Nashik, and Ujjain. The Kumbh Mela is a time for Hindus to bathe in the sacred rivers, to receive blessings from holy men, and to make offerings to the gods.