Which of the following statements BEST explains what a historian studies? A. change over time B. human nature and existence C. human behavior and mental processes D. the production, distribution, and consumption of goods and services

Answer :

I think it's A, but I'll be happy to hear other opinions
Gibbs
Historians could in many ways study all of these things at different times in their relation to other areas of history. However, the best answer is A) change over time.