Correct Option: C

believer (Noun) : a person who believes in the existence or truth or God and religious faith
atheist (Noun) : a person who believes that God does not exist
rationalist (Noun) : a person who believes that all behaviour, opinions, etc. should be based on reason rather than on emotions or religious beliefs theologist (Noun) : a person who studies religion and beliefs
ritualist (Noun) : a person who follows all the rituals and religious ceremonies