Let’s understand this step-by-step.
- In the figure, the vertex of the angle \(\angle XYZ\) is at point Y.
- At point Y, more than one angle is formed — there may be \(\angle XYZ\), \(\angle ZYX\), or others.
- If we just write \(\angle Y\), it is not clear which angle at point Y we are referring to.
- To make it clear, we must name the angle using three points — one on each arm and the vertex in the middle.
- Therefore, \(\angle XYZ\) cannot be written as \(\angle Y\).
Final Answer: Option (A) \(\angle Y\)