The correct answer is: Red.
Madhubani paintings are a form of folk art that originated in the Mithila region of India. They are characterized by their use of bright colors, intricate patterns, and stylized figures. The most common color used in the background of Madhubani paintings is red. This is because red is considered to be a sacred color in Hinduism, the religion of the majority of people in Mithila. It is also associated with fertility, life, and love.
White is also a common color used in Madhubani paintings. It is often used to represent purity, peace, and innocence. Black is less commonly used, but it can be used to represent death, mourning, and evil. Yellow is also less commonly used, but it can be used to represent the sun, gold, and happiness.
In addition to the four colors mentioned above, other colors that are sometimes used in Madhubani paintings include green, blue, orange, and purple. The choice of colors in a Madhubani painting is often based on the subject matter of the painting, as well as the artist’s personal preferences.