Read the passage carefully and choose the correct answer.

            For formal ceremonies, men would have two additional items, a long gown with slits on either side, and a turban, usually in black or brown made of cotton or silk. In feudal times, there were strict dress codes. Ordinary people were not allowed to wear clothes with dyes rather than black, brown or white. Costumes in yellow were reserved for the King. Those in purple and red were reserved for high ranking court officials, while dresses in blue were exclusively worn by petty court officials. Men’s dress has gradually changed along with social development.

            The traditional set of a long gown and turban gave way to modern, looking suits, while business shirts and trousers have replaced traditional long-sleeved shirts and wide trousers. Traditional costumes still exist an efforts are increasingly being made to restore traditional festivals an entertainment which incorporate traditional costumes.

            For women, the outer garment is a special silk gown called an “Ao tu than” which is brown or light brown in colour with four slits divided equally on its lower section. The second layer is a pink gown. When a woman wears her three gowns, she fastens the buttons on the side, and leave those on the chest unfastened so that it forms a shaped collar. This allows her to show the different colours on the upper part of the three gowns. Today, on formal occasions women wear “Ao dai”.

Traditional festivals _______.