The trick to solving such questions is to try and move your lines to match given statements and then evaluate.
Statement 1: x=q, move l in clockwise direction and m in anticlockwise direction to see that x can equal q at n angles.
Not sufficient
Statement 2: same exercise
Combined: See that when you rotate l clockwise and m anticlockwise, x can equal q and y can equal p.
For lines to be parallel, x has to equal p or y has to equal q
Answer E
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Statement 1: x=q, move l in clockwise direction and m in anticlockwise direction to see that x can equal q at n angles.
Not sufficient
Statement 2: same exercise
Combined: See that when you rotate l clockwise and m anticlockwise, x can equal q and y can equal p.
For lines to be parallel, x has to equal p or y has to equal q
Answer E
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...
