Final answer:
The document that would least likely be recorded in a real estate transaction is the Sales contract.
Step-by-step explanation:
The question is related to the topic of real estate and property transactions. The documents mentioned are commonly used in real estate transactions. Out of the options provided, the document that would least likely be recorded is the Sales contract.
Recording a document involves submitting it to the appropriate government office for public record. The purpose of recording documents is to provide notice to the public regarding the legal status or ownership of a property. While the other options such as the First mortgage, General warranty deed, and Second mortgage are typically recorded to establish and protect a legal interest in the property, a sales contract is not usually recorded as it is considered a private agreement between the buyer and the seller.
Therefore, the correct answer is Sales contract.