Final answer:
The spacing between the units on the value axis is called the Interval (option 1).
Step-by-step explanation:
The spacing between the units on the value axis is called the Interval (option 1).
Interval refers to the numeric distance between two consecutive points on the value axis. It is the interval of the scale or the space between each unit of measurement, such as numbers or categories, on the value axis.
For example, on a graph that represents time on the x-axis, if the interval between two tick marks is 1 minute, it means that each tick mark represents a time interval of 1 minute.