An important pigment used in Jammu and Kashmir paintings is:

Lapis Lazuli
Indigo
Turmeric
Vermilion

The correct answer is: a) Lapis Lazuli

Lapis lazuli is a semi-precious stone that has been used as a pigment for centuries. It is a deep blue color and is often used to create a rich, vibrant hue. Lapis lazuli is found in Afghanistan and has been used in paintings from the region for centuries.

Indigo is a blue dye that is extracted from the indigo plant. It is a natural dye and has been used for centuries to color textiles. Indigo is also used as a pigment in paintings and can be used to create a variety of shades of blue.

Turmeric is a spice that is used in cooking and has also been used as a pigment in paintings. It is a yellow color and can be used to create a variety of shades of yellow.

Vermilion is a red pigment that is made from mercury sulfide. It is a very bright color and has been used in paintings for centuries. Vermilion is also used in cosmetics and other products.

In conclusion, the correct answer is: a) Lapis Lazuli. Lapis lazuli is a semi-precious stone that has been used as a pigment for centuries. It is a deep blue color and is often used to create a rich, vibrant hue. Lapis lazuli is found in Afghanistan and has been used in paintings from the region for centuries.