Which one of the following words/phrases is most appropriately used to denote "an interoperable network of 3D virtual worlds that can be accessed simultaneously by millions of users, who can exert property rights over virtual items"?

The Metaverse refers to an interoperable, persistent network of 3D virtual worlds that users can access simultaneously through avatars, interact socially and economically, and own virtual assets (often via blockchain-based property rights such as NFTs). Big data analytics deals with extracting insights from large datasets and is unrelated to virtual worlds. Cryptography is the science of securing information using mathematical techniques. "Virtual matrix" is not a recognized technological term in this context. Therefore Metaverse is the correct match.