Correct option is D
Given:
If parallelogram ABCD,
E and F points on the diagonal AC
Solution:

Parallelogram Diagonal Bisector Property:
The diagonals of a parallelogram bisect each other, meaning that the point where the diagonals intersect divides them into two equal parts.
Therefore, if E and F lie on diagonal AC,
AE = FC
In and
From congruency we get:
ED = BF
Similarly, in and
BE = DF
Also, diagonal BD > diagonal EF
So, BEDF is a parallelogram
