Final answer:
The universal signal of losing ownership is not defined by a single act, but signing a contract is typically indicative of an agreement to transfer ownership, which can include handing over keys or transferring money as part of the process.
Step-by-step explanation:
The act of losing ownership is not universally defined by a single gesture, as it varies based on the context of the transaction and the nature of the property involved. Generally, signing a contract serves as a formal agreement to transfer ownership, applicable in the sale of items or properties like cars or houses. Symbolic acts, such as handing over keys, often accompany transactions in real estate or vehicle sales but might lack legal sufficiency on their own.
Similarly, while transferring money is a component of the purchasing process, it alone does not signal a change in ownership without accompanying legal documentation. Typically, a combination of actions, including contractual agreements and symbolic gestures, is necessary to effectively and legally transfer ownership.