A traditional Mizo shawl with intricate patterns and designs is called:

The correct answer is: a) Puanchei.

A Puanchei is a traditional Mizo shawl with intricate patterns and designs. It is made of cotton or silk and is worn by both men and women. The Puanchei is an important part of Mizo culture and is often worn on special occasions.

The other options are incorrect.

• Mekhela Sador is a traditional Assamese attire worn by women. It consists of a long skirt called a Mekhela and a blouse called a Sador.
• Sari is a traditional Indian garment worn by women. It is a long piece of cloth that is wrapped around the body.
• Lungi is a traditional South Asian garment worn by men. It is a long piece of cloth that is wrapped around the waist.