Final answer:
In an isosceles trapezoid, the diagonals are congruent and bisect each other.
Step-by-step explanation:
In an isosceles trapezoid, the diagonals are congruent and bisect each other. This means that the diagonals have the same length and intersect at their midpoint.
For example, let's consider a trapezoid ABCD where AB is parallel to CD and AD is congruent to BC. The diagonals AC and BD are the perpendicular bisectors of each other, meaning they intersect at point E and divide each other into two congruent segments.
Therefore, the correct option is A. "In an isosceles trapezoid, the diagonals are congruent and bisect each other."