Question

cryptocurrencies use a technology called ______ to avoid having to use a central server or database.

arpanet

multiplexing

information theory

blockchain

Explanation:

Blockchain is a decentralized, distributed ledger technology that cryptocurrencies use to record transactions without a central server or database. ARPANET is an early - stage network, multiplexing is a communication technique for combining multiple signals, and information theory deals with the quantification, storage, and communication of information.

Answer:

D. blockchain