Manipuri pottery is characterized by its:

Unglazed black finish
Brightly colored glazes
Delicate sculpted forms
Large utilitarian shapes

The correct answer is: a) Unglazed black finish.

Manipuri pottery is characterized by its unglazed black finish. It is made from a mixture of clay, sand, and water, and is fired in a kiln at a high temperature. The resulting pottery is strong and durable, and has a unique black finish that is both beautiful and functional.

Option b) is incorrect because Manipuri pottery is not typically decorated with brightly colored glazes. Option c) is incorrect because Manipuri pottery is not typically made in delicate sculpted forms. Option d) is incorrect because Manipuri pottery is not typically made in large utilitarian shapes.