The correct answer is B. Historian A wants to make the colonists appear in a negative light by suggesting that they did not really believe in freedom for all.
Step-by-step explanation:
The two historical texts explain the causes of the American Revolution that made the U.S. an independent country. Despite this, each historian has a different perspective or point of view of this conflict in the case of Historian A this historian supports mainly Great Britain and is trying to show negatively colonists, this can bee seen in "The American Revolution was caused by the American colonists’ greedy desire for more money" or "Their claims to be fighting for freedom and liberty are totally wrong. Many of the colonists still owned slaves" that suggest this historian believes colonists did not believe in freedom but only wanted money. Thus, it is probable historian A mentions slavery because he wants to show colonists were not pursuing freedom or did not really believe in it (Option B).