Answer:
The key element in classifying different religious groups is understanding the denominations of religion.
Step-by-step explanation:
The key element in classifying different religious groups is understanding the denominations of religion. A denomination is a distinct branch of a religious group that differs in its beliefs, practices, and organization from other branches. There are various denominations within major world religions such as Christianity, Islam, Judaism, Buddhism, and Hinduism. Each denomination has its own unique set of beliefs, rituals, and customs that distinguish it from others. Understanding the denominational differences can help in developing a greater appreciation and respect for the diversity of religious traditions around the world.
~~~Harsha~~~