Triangles have a property that the side opposite to the larger angle is larger
Angle opposite XY = Z = 180 - 148 = 32
Angle opposite YZ = X = 34
32 < 34
Z < X
XY < YZ
Ans. B
There is a triangle property that the length opposite to the larger angle is larger. Simply find the angle at the vertex Z and proceed to compare the lengths using the angles