Answer:
Segment ZL or LZ (whichever you prefer)
Explanation:
We are asked to find an adjacent line segment to angle Z. An adjacent line segment is a line segment right next to the given angle. We cannot say LC because that would be the opposite segment. We also cannot say ZC because that is the hypotenuse of the triangle, and opposite from the 90 degree angle.
This means that ZL is the adjacent line segment.
Hope this helps! :)