In how many of the following countries does the majority of the population adhere to one religious tradition: Egypt, India, Poland, Thailand?

The correct answer is that in all four countries—Egypt, India, Poland, and Thailand—the majority of the population adheres to one religious tradition.

In Egypt, the vast majority of people are Muslim, belonging predominantly to the Sunni branch of Islam. This dominance of Islam shapes many aspects of social and cultural life in the country.

In India, while there is significant religious diversity, Hinduism is the majority religion, with approximately 80% of the population identifying as Hindu. This strong adherence shapes the cultural and social practices in the country.

Poland is predominantly Roman Catholic, with around 90% of the population identifying as members of the Catholic Church. This strong affiliation influences Polish culture, traditions, and societal values.

Lastly, Thailand has Buddhism as the majority religion, with about 95% of the population practicing Theravada Buddhism. This has a profound impact on the cultural and social frameworks of Thai society.

Thus, since each of these countries has a clear majority adhering to a single religious tradition, the answer is that in all four cases, the majority of the population adheres to one specific religious tradition.