Answer:
A. to present unbiased facts and evidence
Explanation:
History is a branch of science that aims to understand and explain the evolution of phenomena of human nature over time. As with all science, the advance of history follows a set of scientific methodologies that guarantee the reliability and impartiality of research. Scientifically, what matters is not the historian's personal opinion, but the nature of the fact and the evidence to support it. Therefore, historical facts and evidence are non-manipulative instruments of analysis that underlie the advance of history as a human science.
