The Bodh Gaya Temple is an important pilgrimage site for:

Hindus
Buddhists
Jains
Sikhs

The correct answer is Buddhists.

Bodh Gaya is a town in the Indian state of Bihar. It is located in the Gaya district, about 96 km (60 mi) south of Patna. The town is best known as the site of the Mahabodhi Temple, a UNESCO World Heritage Site. The temple marks the spot where the Buddha attained enlightenment under the Bodhi tree.

The Mahabodhi Temple is one of the most important pilgrimage sites in Buddhism. It is visited by millions of pilgrims every year from all over the world. The temple complex is a large area with many different buildings and structures. The main temple is a large, white stupa. The stupa is surrounded by a number of smaller temples and shrines. There are also a number of monasteries and other religious buildings in the complex.

The Mahabodhi Temple is a very important place for Buddhists. It is a place where they can come to pay their respects to the Buddha and to learn about his teachings. The temple is also a place where they can come to meditate and to find peace and tranquility.

The other options are incorrect because they are not the main religion that follows Buddhism. Hindus, Jains, and Sikhs are all different religions. They do not follow Buddhism and they do not consider the Mahabodhi Temple to be an important pilgrimage site.