Answer:
Line B
Step-by-step explanation:
The slope of line can be defined as the ratio of rise and run.
Mathematically, the formula for slope is
[tex]\text{Slope}=\frac{\text{rise}}{\text{run}}[/tex]
Now, for zero slope, rise should be zero. In other words if there is no any change in the vertical direction then the slope of the line would be zero.
For horizontal line, the vertical change is zero.
Therefore, we can say that any horizontal line has zero slope.
Among the given options, line B is horizontal and hence it has a zero slope.
