Which of these represents bias in historical materials?
a) leaving out the viewpoint of an enemy of war
b) presenting ideas of both men and women
c) reporting on discrimination against a particular race
d) considering all cultures to be equal
: )

it is A because the enemy has a reason for fighting to not just your side.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)