Which of the following is a folk wrestling style and traditional national sport of Korea?

Ssireum or Korean wrestling is a folk wrestling style and traditional national sport of Korea that began in the fourth century.

In the modern form each contestant wears a belt (satba) that wraps around the waist and the thigh. The competition employs a series of techniques, which inflict little harm or injury to the opponent: opponents lock on to each other's belt, and one achieves victory by bringing any part of the opponent's body above the knee to the ground.

The earliest evidence of "ssireum" dates back to the Goguryeo period. Originally used in military applications, "ssireum" became a popular pastime of the people, including many Korean kings, during the Goryeo and Joseon periods.