Concept:In any triangle, the point where the three interior angle bisectors meet is called the incentre. This point is equidistant from all three sides of the triangle.Explanation:Each angle bisector divides the opposite angle into two equal parts. The three angle bisectors always intersect at a single point – the incentre. This point is the center of the inscribed circle (incircle) that touches all three sides. The property holds for all types of triangles (acute, right, or obtuse), and the incentre always lies inside the triangle.Thus, the incentre is determined by the intersection of the angle bisectors, not by altitudes, medians, or perpendicular bisectors.Answer:B. angle bisectors