the worlds largest universalizing religion is\n\nshintoism\nhinduism\nbuddhism\nchristianity\nislam

Brief Explanations:

A universalizing religion is one that attempts to be global and appeal to all people, regardless of their location or culture, rather than being tied to a specific ethnic group or place. Christianity is currently the world's largest universalizing religion, with approximately 2.4 billion followers globally. In contrast, Hinduism and Shintoism are categorized as ethnic religions because they are primarily associated with specific cultural or ethnic groups. While Islam and Buddhism are also major universalizing religions, their total number of adherents is currently lower than that of Christianity.

Answer:

Christianity