Statement A is true.
Explanation:
Step 1:
When a reflection occurs, the side lengths and the angles are preserved. Reflection is a rigid transformation i.e. the parameters remain constant.
As side lengths and angles are preserved statements C and D cannot be the answers.
Step 2:
Now we plot the points of the triangle before and after reflection.
The point R contains the angle of the triangle before reflection and the point Q contains the angle of the triangle after reflection.
So we need to search for the option where R in the first triangle is replaced by Q in the second triangle i.e. ∠KHM = ∠QPR.
So the answer is statement 1. Reflections preserve angle measures and side lengths, so by the Side-Angle-Side congruence theorem, it can be concluded that ∠KHM = ∠QPR.