Final answer:
A perpendicular bisector is a line that intersects another line at a 90-degree angle and divides it into two equal parts. In this case, the option that represents a perpendicular bisector is b) Median.
Step-by-step explanation:
A perpendicular bisector is a line that intersects another line at a 90-degree angle and divides it into two equal parts. It is commonly used in geometry to find the center of a line segment or to construct different types of triangles. In this case, the option that represents a perpendicular bisector is b) Median. A median of a triangle is a line segment that connects a vertex to the midpoint of the opposite side, and it is always perpendicular to that side. For example, in an equilateral triangle, all three medians are perpendicular bisectors because they connect a vertex to the midpoint of the opposite side.