Answer:
a. Della will lose because he did not sign a contract.
Explanation:
The UCC are a set of guidelines that is used for trade transactions to resolve disputes and ensure equity between the buyer and seller.
There are various criteria used to qualify a valid transaction. One of them is that for a non movable asset, it's sale must be under a written contract.
A verbal contract will not suffice and is not binding.
In this scenario where Joe verbally contracts with Delia to sell his farm to Delia, they did not sign a contract and makes a down payment. But Joe decides after several months to sell his farm to Eli.
Since there is no written contract if Delia objects to the second sale she will lose