multiple questions please help

Which attribute of money is unique to cryptocurrency? O It is a fungible store of value which serves as a medium of exchange. O It can be divided into smaller portions and used for different sizes of transaction. It is a predictable, fixed monetary supply. O It is durable and able to provide a lasting store of value. Confirm What is the primary difference between cryptocurrency and a blockchain? O Cryptocurrency is a medium of exchange, but blockchains are a store of value. O Cryptocurrency is a new type of money, and blockchains are the enabling technology. O Blockchains are cryptographically secure and cryptocurrency is not. O Blockchains are not related to cryptocurrency Confirm What accurately describes Bitcoin? O Bitcoin is a cryptocurrency that provides a stable unit of account. O Bitcoin was created as a way to pay for goods and services on the black market. O Bitcoin may not be used as a medium of exchange. O Bitcoin was the first example of blockchain technology Confirm How might blockchain technology potentially address a common business need? The need for liquidity - being able to send value to anyone in the world 24/7 without being constrained by banking hours O Eliminating all types of fraud in all business applications. O Reducing the need for third parties from many to just one. O Verifying transactions by having to ask only the sender Confirm What is the unique value proposition of public-key cryptography? O Bitcoin miners need both the public and private keys to validate a transaction. The person sending cryptocurrency never reveals the private key. O Private keys are mathematically derived from public keys. O A public address is susceptible to theft of cryptocurrency. Confirm What does the proof of work consensus mechanism achieve? O Provides a platform where miners have to pay to compete for block rewards. Flexibility to switch to proof of stake consensus model. O The computational power necessary to win a block reward. O Creates an incentive for untrusted third parties to act honestly. Confirm