Which document is not required to be in writing according to the Statute of Frauds?

The correct answer is based on the requirements established by the Statute of Frauds, which specifies certain contracts that must be in writing to be enforceable. Among the options listed, a loan agreement typically does not need to be in writing if it involves a certain amount of money and is intended to be paid back within a year. This reflects the general understanding that oral agreements may still be enforceable in these circumstances, provided that they do not exceed the one-year term and the amount is not in such an amount that it would require a written document by the rules of the Statute of Frauds.

In contrast, a lease for one year does not fall under the Statute of Frauds; however, longer leases, like those for more than one year, and transactions involving the sale of real estate, are explicitly required to be in writing as protective measures in legal contexts. Thus, the exclusion of loan agreements from this writing requirement makes them more flexible in terms of enforceability under the Statute of Frauds.