Given:
MO and PR are parallel lines.
Let's determine the adjacent angles.
Adjacent angles can be said to be angles which have a common vertex and share a common side.
At each of the parallel lines, the adjacent angles are supplementary (they sum up to 180 degrees).
The adjacent angles from the list are:
∠ONL and ∠ONQ
This is because they have a common vertex and are on a common side.
∠ONL + ∠ONQ = 180 degrees
ANSWER:
∠ONL and ∠ONQ