A traditional form of Mizo tattooing, often featuring geometric patterns, is known as:

Pachal
Henna
Irezumi
Sak Yant

The correct answer is: a) Pachal.

Pachal is a traditional form of Mizo tattooing, often featuring geometric patterns. It is a rite of passage for young Mizo women and is believed to protect them from evil spirits. The tattoos are applied using a bamboo needle and a mixture of soot and oil.

Henna is a temporary form of body art that is popular in many cultures around the world. It is made from the leaves of the henna plant and is applied to the skin using a paste. The henna leaves contain a dye that stains the skin, and the color will last for several days or weeks.

Irezumi is a traditional Japanese form of tattooing that is often associated with the Yakuza. It is a permanent form of body art that is typically done in black ink. Irezumi designs often feature animals, flowers, and other symbols that have personal meaning to the wearer.

Sak Yant is a traditional Thai form of tattooing that is often associated with Buddhism. It is a permanent form of body art that is typically done in black ink. Sak Yant designs often feature Buddhist symbols, such as the Buddha, the five precepts, and the eightfold path.