What’s a vertical or hornizontal line in graphs called

The vertical is the y-axis and the horizontal is the x-axis

Vertical is the y-axis
horizontal is the x-axis

C. naturally in the environment

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!