Answer:
The answer that they're looking for is A. The first set doesn't belong because it's the only one in which the lines are parallel.
However, one could argue that none of the others belong;
B is the only one with two lines instead of 3
C is the only one with three lines converging at the same point.
D is the only one with more than one point of intersection
But it is pretty clear that the answer sought is A. It's the only one with parallel lines.
