The correct option is 2. The length of LO is 6 units.
Step-by-step explanation:
Translation is a rigid transformation. It means the image and preimage are congruent.
It is given that quadrilateral ABCD is translated down and left to form quadrilateral OLMN. It means after a rigid transformation OLMN is the image of ABCD. So,
Now, we can say that
Therefore the length of LO is 6 units and the correct option is 2.