Which of these religions originated in japan? a) buddhism b) confucianism c) islam d) shinto

All of these religions originated in different parts of the world.
Buddhism was cultivated in India by a young prince named Siddhartha Gautama (later known as Buddha, or the Enlightened One), who was dissatisfied with his luxurious life as long as he knew that there were people outside of his world that were living in misery.
Confucianism was founded by Confucius, an ancient Chinese scholar who promoted living selflessly and following the Golden Rule.
Islam is a religion that began in present-day Saudi Arabia by a young man named Muhammad, who claimed he had a vision from the angel Gabriel while resting in a cave.
Shinto is a Japanese religion that emphasizes respect for persons and certain structures known as shrines as well as other symbolic rituals and practices.
Of these religions, only D. Shinto was originated in Japan, so that is yoru correct answer.
Hope that helped! =)