Exp) Option b is the correct answer        

The Edicts of Ashoka are a collection of 33 inscriptions on the Pillars of Ashoka as well as boulders and cave walls made by the Emperor Ashoka of the Mauryan Empire during his reign from 269 to 232 BC

Pair 1 is correctly matched: Dhauli Rock edict is located in dhauli hills, close to 10 kms from Bhubneshwar in Odisha. The edicts are engraved on a large peace of rock, written in Pali. The rock edict is located near the historical sight of the Kalinga war which is said to transform Samrat Ashok

Pair 2 is correctly matched: Erragudi or Yerragudi rock edict is located in Kurnool district in Andhra Pradesh. The inscriptions were one of the important treasures of Mouryan king Ashoka (269-231 BCE) falling under major and minor rock inscriptions.

Pair 3 is incorrectly matched: Jaugada is the second place in Odisha where there is a major Ashokan rock edict. Ashoka’s inscription in Jaugada is on a rock face about 30 feet long and 15 feet high. The rock edict inscriptions, engraved in Prakrit language in Brahmi script, have information about the better administrative policies based on Ashoka’s humanitarian consideration.

Pair 4 is incorrectly matched: Kalsi is a small town located in between Chakrata and Dehradun on the banks of Yamuna River in Uttarakhand. The site of Ashoka’s inscriptions at Kalsi is singularly unique as it is the only place in North India where the great Mauryan emperor has inscribed the set of the 14 rock edicts.

Source: Nitin Singhania Chapter 1 1 INDIAN ARCHITECTURE, SCULPTURE AND POTTERY

ASI to develop Ashoka rock site as tourist spot – The Hindu

Odisha Tourism : Jaugada – Ashokan Major Rock Edict In Odisha