Hannah intends to give her granddaughter, Laura, her antique hat pin. This heirloom has been kept under lock and key in the wall vault in the library of Hannah's house in Virginia. The hat pin is currently the only item in the vault. When Hannah is visiting Laura in Connecticut, Hannah gives Laura the only key to the vault. Laura is grateful for the present and excitedly accepts. In this situation has there been a completed gift?

Yes. There has been constructive delivery of the hat pin.

Explanation:

Hannah intends to give her granddaughter, Laura, her antique hat pin. This heirloom has been kept under lock and key in the wall vault in the library of Hannah's house in Virginia. The hat pin is currently the only item in the vault. When Hannah is visiting Laura in Connecticut, Hannah gives Laura the only key to the vault. Laura is grateful for the present and excitedly accepts. In this situation has there been a completed gift? Yes. There has been constructive delivery of the hat pin.

Yes. There has been constructive delivery of the hat pin.

Yes. There has been constructive delivery of the hat pin.

Explanation:

In a situation that the key has been handed over to Laura by her grandmother Hannah, there has been a completed gift here because constructively, the hat pin has been delivered to Laura. This is so because, the vault has only one key, which means no other person is in possession of the key, and the hat pin is located inside the vault which only Laura now is purview to open it, for the reason that the key has been given to her. Hence, the gift is completed.