What must occur for attachment to take place in secured transactions?

For attachment to occur in secured transactions, the secured party must possess the collateral. This is an essential requirement under the Uniform Commercial Code (UCC), which governs secured transactions. The process of attachment establishes a security interest in the collateral and occurs when three conditions are met: there is a valid security agreement, the debtor has rights in the collateral, and the secured party has either possession of the collateral or has perfected its security interest through filing.

Possession by the secured party creates a priority and legitimizes their security interest, allowing them to enforce their rights against the collateral in the event of the debtor's default. This is fundamental for the secured party's ability to claim the collateral in a legal context.

The other options present requirements or scenarios that do not align with the definitions and principles of secured transactions. Selling the collateral or dealing with immovable property would not fulfill the criteria for attachment, nor would a verbal agreement suffice for establishing a security interest.