Let's analyse each statement and check if they apply for parallelograms, rectangles, neither of both of them:
"Diagonals bisect the interior angles of the quadrilateral".
This property applies only for rhombus and squares, to for this sentence the answer is neither.
"Diagonals bisect each other".
This property applies for parallelograms and for rectangles, so we have both rectangles and parallelograms
"Diagonals form isosceles triangles with outer edges".
This property applies for rectangles only, because the length of the diagonals is the same.
"Diagonals are perpendicular to each other".
This property is valid only for rhombus and squares, so we have neither.
"Diagonals are congruent to each other".
Similar to the 3rd statement, this property is for rectangles only.