Two figures are "congruent" if they have the same shape and size meaning they can be reflected and repositioned.
Note: They can not be resized if they are congruent.
The first option is congruent because the diagonals divides the shape into two equal parts of same sizes and angles.
The second option can not be said to be congruent because the sizes and angles of the shapes can not be determined and the shapes looks different a little.
The third option can be said to be congruent because the angles are vertical angles formed from the intersection of two lines which bisects each other
The last two shapes are not congruent because they are of different sizes.
The second and last option is correct. (Not congruent)