The correct answer is:
On the other hand.
"He looked forward to visiting with old friends. Greta, on the other hand, dreaded seeing her old boyfriend."
This phrase is showing Greta and Fred are having different feelings in that moment, creating a contrast between both of them.
It is false that dive and five are a pair of eye rhymes.
Eye rhymes refers to words which are written similarly, but have different pronunciations. For example, love and move - as you can see, their spelling differs only in one letter, but their pronunciation is not similar at all. This is not the case in dive and five - they are both written and pronounced similarly.
We need the lines and more information ;)
