The correct answer is D) Historiography.
The other options of the question were A) conclusion. B) hypothesis. C) bias.
A historian writes an interpretation of past historical events based on a careful analysis of many different sources. This is called Historiography.
Although the word could sound strange, many historians use it as part of their work. Historiography means the analysis of historical events to try to offer a new perspective or a better perspective of how things happened. Historians work on deeper analysis or research to cover different angles or versions of history. So it is true that the historian writes an interpretation of past historical events based on a careful analysis of many different sources.