Read the passage and answer the question :

Who were these hill folk? Why were they so apprehensive of Buchanan's visit? Buchanan's journal gives us tantalising glimpses of these hill folk in the early nineteenth century. His journal was written as a diary of places he visited, people he encountered, and practices he saw. It raises questions in our minds but does not always help us answer them. It tells us about a moment in time, but not about the longer history of people and places. For that historians have to turn to other records.

Buchanan's survey provides us information about 'hill folks' in the form of

Diary

The correct answer is Option (1) → Diary

As per the passage:

Who were these hill folk? Why were they so apprehensive of Buchanan's visit? Buchanan's journal gives us tantalising glimpses of these hill folk in the early nineteenth century. His journal was written as a diary of places he visited, people he encountered, and practices he saw. It raises questions in our minds but does not always help us answer them.