Mandalas were
a.
clay figurines popular during the jomon period.
b.
a hanging scroll used for teaching about deities.
c.
a representation of a person, especially in the sculpture form.
d.
a garment, such as a sash of about twenty feet, and wrapped around the body.

The answer is B. A hanging scroll used for teaching about deities.

b.  A hanging scroll used for teaching about deities.

Explanation:

Mandalas are originally meant for religious and spiritual geometric symbols or designs used in the various religions of Hinduism, Buddhism and Jainism. They are the hanging scrolls that are used for the teachings about the deities.

Though they have the religious aspect related to them, mandalas are more popularly known or taken in general as any diagram, chart or pattern that represents the cosmic world. The metaphysical or spiritual connotation of these mandalas as used in modern times was somehow a mere interpretation of the more traditional, religious aspect it was mainly meant to be.

i believe it is a. a segment : )