Katarzyna has already drawn an arc from the vertex point Q that intersects both sides of the angle at points P and R. The next step in constructing the angle bisector would involve using the positions of these intersection points (P and R) to find the bisector.
The correct option would be to place the pointed end of the compass on point P and draw another arc inside the first arc and between the two sides of the angle. This step will help her find the points where these two arcs intersect, which will be used to locate the angle bisector.
Therefore, Katarzyna’s next step is Option #2.