To prove triangle NOP is congruent to triangle QSR, you would need additional information about the congruence of either angles or sides. The options provided include:
1. Line PN congruent to line SQ
2. Line NO congruent to line QR
3. Angle P congruent to angle S
4. Angle O congruent to angle S
You would need to have at least one of these statements to prove the congruence of the triangles.