Answer:
Option B.
Explanation:
The given graph is of a line which is parallel to the x axis.
Let the equation of the line is y = mx + c
where m is the slope and c is a constant representing y - intercept.
Since the graphed line is parallel to x = 0
So for the values of x = 0 equation of the line will be
y = c (constant)
Therefore, Option B. Linear constant is the answer.