The detail that supports that digital currency is risky is option C "This means there are no official rules used by the government about buying and selling with digital currency."
What is a detail?A detail is a piece of information that is included in a text with the purpose of supporting an idea, theme, or topic. For this particular question, we must find the detail that supports the idea that digital currency is risky.
We believe option C is the best choice. This statement implies that there are no official regulations or protections in place for digital currency, which makes it more vulnerable to fraud, theft, and other risks.
While the other statements mentioned in the passage do provide information about digital currency, they do not necessarily suggest that it is risky. For example,option A simply highlights the fact that bitcoin is a form of currency that can be used to make purchases. Option B suggests that digital currency may be more secure than credit cards, but it does not necessarily indicate that it is risky.
On the other hand, option C suggests that there is a lack of oversight and regulation when it comes to digital currency, which makes it more vulnerable to risks such as fraud and theft. Therefore, this statement provides the strongest support for the opinion that digital currency is risky.
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