When does milk become the property of the buyer?

The correct understanding is that milk generally becomes the property of the buyer when it is loaded into the transport truck on the farm. This moment signifies a transfer of ownership as the milk is now in the custody of the transport and is being moved with the intent of being delivered to the buyer’s processing facility. At this point, the seller has fulfilled their responsibility by providing the milk for transport, and the buyer assumes responsibility for the product.

Other options do not accurately reflect the point of ownership transfer. Simply having a purchase agreement or the concept of the product leaving the farm does not signify ownership, as these can still include conditions related to the seller's rights or responsibilities. Additionally, ownership does not transfer after processing, since processing involves additional steps that could alter the product further from its original state.