Answer
Option A is correct.
Slope = 0
Step-by-step explanation
For a straight line, the slope of the line can be obtained when the coordinates of two points on the line are known. If the coordinates are (x₁, y₁) and (x₂, y₂), the slope is given as
![Slope=m=\frac{Change\text{ in y}}{Change\text{ in x}}=(y_2-y_1)/(x_2-x_1)](https://img.qammunity.org/2023/formulas/mathematics/college/2spudbjlkh14f60l20sveubtri0s31xnrj.png)
For this question,
(x₁, y₁) and (x₂, y₂) are (2, 1) and (0, 1)
x₁ = 2
y₁ = 1
x₂ = 0
y₂ = 1
![\text{Slope = }(1-1)/(1-2)=(0)/(-1)=0](https://img.qammunity.org/2023/formulas/mathematics/college/pnzbyq42chogr0lk5w2gadt9kggiuu935m.png)
Hope this Helps!!!