The ancient capital of the Lohara dynasty can be found at the archaeological site of:

Martand
Parihaspora
Akhnoor
Poonch

The correct answer is: b) Parihaspora.

Parihaspora is an archaeological site in the Baramulla district of Jammu and Kashmir, India. It was the capital of the Lohara dynasty from the 10th to the 13th centuries. The site is home to a number of ruins, including a palace, a temple, and a mosque.

Martand is a ruined temple complex located in the Anantnag district of Jammu and Kashmir, India. It was built in the 8th century by King Lalitaditya Muktapida of the Karkota dynasty. The temple is dedicated to the Hindu god Shiva.

Akhnoor is a town in the Akhnoor district of Jammu and Kashmir, India. It is located on the banks of the Chenab River. The town is home to a number of historical sites, including a fort, a mosque, and a temple.

Poonch is a town in the Poonch district of Jammu and Kashmir, India. It is located on the banks of the Poonch River. The town is home to a number of historical sites, including a fort, a mosque, and a temple.

Parihaspora is the correct answer because it was the capital of the Lohara dynasty from the 10th to the 13th centuries. The other options are not correct because they were not the capital of the Lohara dynasty.