Answer and Explanation:
The computation is shown below:
Realized gain is
= Realized amount - adjusted basis
= $709,800 - $35,490 - $253,500
= $674,310 - $253,500
= $420,810
And, the recognized gain is
= Realized gain - exclusion
= $420,810 - $250,000
= $170,810
Since Constanza is single so the amount of $250,000 would be considered as an exclusion