Concept:Al-Biruni was a Central Asian scholar and traveler whose writings provide valuable historical information about India.
Explanation:Al-Biruni was born in Khwarizm, a city on the Amu Darya river, now in Uzbekistan.
He traveled widely to study different cultures and wrote the famous book
Kitab-al-Hind.
This book gives a detailed account of the Indian subcontinent from 1017 to 1030 AD.
His work helps historians understand India's past, including its society, religion, and science.
He also made contributions to astronomy, such as calculating distances between the moon and Earth, and explaining tides based on moon phases.
Therefore, option C correctly describes Al-Biruni as a traveler from Uzbekistan who wrote a book helpful for knowing India's past.
Answer:C. A traveller from Uzbekistan who wrote a book which is helpful to know the past of our country.