Which of the following is a global, rather than an ethnic, religion?

A. Jainism

B. Buddhism

C. Sikhism

Base on the number of the followers of the religion, the answer will be B. Buddhism.

Jainism has only 4-6 million followers.

Sikhism has only 25 million adherents, making Sikhism as the fifth largest religion in the world.

Buddhists number between an estimated 480 million to 530 million making it as one of the world's major religion.