Concept:The locus of points equidistant from two intersecting straight lines is formed by the angle bisectors of those lines.
Explanation:Let the two given lines intersect at a point
O.
At the intersection, four angles are formed, made by the two straight lines.
A point that is equidistant from the two lines must have equal perpendicular distances to both lines.
The set of all such points lies on the line(s) that bisect the angles between the two given lines.
Hence, the locus is the angle bisector of the two intersecting lines.
Answer:B. angle bisector of the two lines