The correct answer is: d) Religious figures and symbols.
Thangka paintings are a form of Tibetan Buddhist art that originated in the 11th century. They are typically painted on cotton or silk cloth and depict religious figures, such as Buddhas, bodhisattvas, and lamas, as well as religious symbols, such as mandalas and thangka banners. Thangka paintings are often used as aids to meditation and prayer, and they are also considered to be sacred objects.
Option a) is incorrect because thangka paintings do not typically depict scenes of everyday life. Option b) is incorrect because thangka paintings do not typically depict animals or nature. Option c) is incorrect because thangka paintings do not typically depict geometric designs.