Mainland Southeast Asia has been termed the "crossroad of religions," for in this region, today divided into the countries of Burma, Thailand, and Laos, Cambodia (Kampuchea), and Vietnam, a large diversity of autochthonous tribal religions are intermingled with Hinduism, Theravāda and Mahāyāna Buddhism, Daoism, Confucianism, Islam, and Christianity, as well as the modern secular faith of Marxist-Leninism.
Your answer is simply C. Judaism