The correct answer is (b), Harul.
Harul is a folk dance of Jaunsar-Bawar region of Uttarakhand, India. It is a group dance performed by both men and women. The dance is accompanied by the music of drums, dhol, and the Ramtulla musical instrument.
The Ramtulla is a stringed instrument that is played with a bow. It is made of wood and has two strings. The instrument is played by drawing the bow across the strings. The sound of the Ramtulla is similar to the sound of a violin.
The Harul dance is performed during festivals and other special occasions. It is a lively and energetic dance that is enjoyed by people of all ages.
The other options are incorrect because they are not folk dances of Jaunsar-Bawar region.
(a) Budiyal is a folk dance of Kumaon region of Uttarakhand.
(c) Tandi is a folk dance of Garhwal region of Uttarakhand.
(d) Pandvart is a folk dance of Himachal Pradesh.