Answer: A. x = 3
Explanation:
I have graphed x = 8 and the point (3, 6). See attached.
We know that options C and D are incorrect because they are y = equations and not x = equations like the one given, so they will not be parallel to x = 8.
Lastly, our point is (3, 6) with a value of x = 3. This gives us a parallel equation that goes through that point (I have added x = 3 to the graph attached as well);
x = 3