The correct answer is: a) Rice flour.
A kolam is a traditional Indian decorative art form created by drawing geometric patterns on the ground using rice flour, sand, or colored stone powder. It is often done outside the entrance to homes and temples, and is believed to bring good luck and prosperity.
Rice flour is the most common material used to create kolams, as it is readily available and easy to work with. The patterns are typically drawn freehand, using a stick or the fingers. Once the pattern is complete, it is left to dry in the sun. The rice flour will then be swept away, leaving behind a beautiful and intricate design.
Kolams are an important part of Indian culture, and are often seen as a way to connect with the divine. They are also a way to express creativity and beauty.