The correct answer is: A. Dev Raj Sharma.
Himachal Pradesh Parichay is a book written by Dev Raj Sharma. It is a comprehensive guide to the state of Himachal Pradesh, covering its history, geography, culture, and people. The book is divided into three parts: the first part deals with the history of Himachal Pradesh, the second part deals with its geography, and the third part deals with its culture and people.
The book is a valuable resource for anyone interested in learning more about Himachal Pradesh. It is well-written and informative, and it provides a comprehensive overview of the state.
The other options are incorrect.
B. Bansilal Sharma is a politician from the Indian National Congress. He has served as a member of the Himachal Pradesh Legislative Assembly from the Shimla constituency since 2007.
C. Ram Rahul is a former Indian cricketer. He played for India in 19 Tests and 10 ODIs between 1984 and 1990.
D. Rahul Sankrityayan was an Indian historian, linguist, and writer. He is best known for his work on the history of Tibet and Buddhism.