Final answer:
Mount Sinai is widely known to be located in the Sinai Peninsula of Egypt, and its identification is supported by historical and religious traditions.
Step-by-step explanation:
Regarding the location of Mount Sinai, most people are generally aware that Mount Sinai is located in the modern-day Sinai Peninsula of Egypt.
This identification is based on historical, religious, and archeological evidence. The monastery of Saint Catherine stands at the foot of what is traditionally considered to be Mount Sinai, where it is believed that the prophet Moses received the Ten Commandments. Due to its historical significance, the location has not only been a destination for religious pilgrims but also for scholars and tourists, making it a well-known site rather than a mystery. Therefore, the correct answer is A) Yes, it's well-known.