What are mandalas? (site 1)

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Explanation:

A mandala is a spiritual and ritual symbol in Hinduism and Buddhism, representing the universe. The basic form of most mandalas is a square with four gates containing a circle with a center point.The earliest evidence of Buddhist mandala art dates to the first century B.C.E. but appears in other regions, such as Tibet, China, and Japan by the fourth century. Although rooted in Buddhism, mandalas later became present in Hinduism, New Age Spirituality, and other religious practices.

the answer is b. i'm positive it's that answer.