The Kaaba is a building of bluish and grayish stones obtained in the mountains that surround the city of Mecca, its shape is that of a rectangular prism that is inside the Masjid al-Haram mosque in Mecca in present-day Saudi Arabia. It is the most important sacred place of pilgrimage of Islam, indeed one of the 5 pillars of Islam is to visit it at least once in a lifetime. Also, the Muslims from all over the world go to it. According to the sacred scriptures, it was built by Abraham and his son in ancient times. So, the correct answer is D. An ancient stone temple.
