To copy the angle \( \angle BAC \) to angle \( \angle Q \), the correct construction involves measuring the distance between points \( B \) and \( C \) (the points on the angle \( \angle BAC \)). You would then use this measurement to create an arc from point \( Q \) that replicates the angle.
Therefore, the correct response is:
Using a compass, measure the length from point B to point C. Then, make another arc by placing the pointed end of the compass on point Q and draw a small arc that intersects with the larger arc above point P.