Triangle ΔJAS: we know side JS, angle 1 and angle 2
Triangle ΔKCS: we know side KS, angle 7 and angle 8
For each of these triangles we know one side and two angles.
In the possible answers A stands for angle and S stands for side. So the correct answer would be something that involves one S and two As. That could be either a) or b). We choose a) because we have two angles and a side opposite to one of them. We would choose b) if the side was between these two angles.
