Concept:The locus of points equidistant from two intersecting straight lines is the pair of angle bisectors of the angles formed by the lines.
Explanation:When two straight lines intersect, they create four angles at the point of intersection.
For any point to be equidistant from both lines, its perpendicular distance to each line must be equal.
The only points that satisfy this condition lie on the lines that cut each of those angles into two equal parts.
These lines are called the angle bisectors of the intersecting lines.
Thus, as a point moves along either angle bisector, it remains equally distant from both straight lines.
The locus is therefore not a single parallel line or perpendicular bisector; it is the angle bisector(s) of the two intersecting lines.
Answer:C. angle bisector of the two lines.