Answer: Ritual
An established pattern of behavior through which a group of believers experiences the sacred is called ritual.
Explanation:
Ritual refers to performing ceremonial acts in accordance with traditions. It involves worship and sacraments of religion, rites of passage, atonement, ceremonies and so on. Its characteristics include: traditionalism, formalism, sacral symbolism, invariance, performance and so on. It is a ceremony which is performed in a customary way. Thus, it is a mode of behaviour displayed or exhibited by people in the society.