Passage: Read the given passage carefully and answer the questions that follow. Cryptocurrency is a type of digital or virtual currency that uses cryptography for security. Unlike traditional currencies issued by governments (fiat money), cryptocurrencies are decentralised and operate on a technology called blockchain. Blockchain is a distributed ledger that records all transactions across a network of computers, making it nearly impossible to alter the records without altering every block in the chain. Bitcoin, created in 2009 by an anonymous person (or group of people) under the name Satoshi Nakamoto, was the first cryptocurrency. Since then, thousands of cryptocurrencies have been developed, such as Ethereum, Ripple, and Litecoin. Cryptocurrencies offer numerous advantages, including faster and cheaper international transfers, enhanced privacy, and the potential for financial inclusion for people without access to traditional banking systems. However, cryptocurrencies are volatile and their value can fluctuate dramatically. They are also sometimes used for illicit activities due to the anonymity they provide. Despite these challenges, cryptocurrencies are gaining acceptance as a legitimate form of payment and are being incorporated into various sectors, including finance, healthcare, and even art. Question: What is the tone of the passage about cryptocurrency?

1. Informative
2. Sarcastic
3. Humorous
4. Critical