What is expected of a buyer not in the ordinary course regarding knowledge of interests?

The correct answer reflects the principle that a buyer not in the ordinary course of business may take free from unperfected security interests in goods if they are unaware of those interests at the time of the purchase. In secured transactions, a "buyer not in the ordinary course" typically refers to someone who is acquiring property in a way that does not align with the usual practices of a business engaging in that type of commerce.

This principle recognizes the importance of protecting buyers who, without proper notice or knowledge of existing rights or claims against the property, can make legitimate purchases. If the buyer is genuinely unaware of any unperfected interests, the law offers them some protection against those interests, allowing the transaction to proceed without being encumbered by the claims of secured parties who failed to perfect their interests.

In contrast, buyers who are aware of existing interests may not receive the same level of protection since they have knowledge of the risks involved. This reinforces a balance between encouraging commerce and safeguarding the rights of secured parties. Therefore, this answer highlights how the law facilitates pragmatic transactions, supporting those who act in good faith without knowledge of competing claims.