Which of the following investments is considered very high risk?

Precious metals are considered very high risk due to their inherent volatility and dependence on market sentiment. Unlike more stable investments such as bonds, government securities, or certificates of deposit which typically offer fixed returns and are backed by more stable financial structures, precious metals can experience significant price fluctuations influenced by various factors including economic conditions, supply and demand dynamics, and geopolitical events. As a result, while they can potentially provide substantial returns, they also come with a considerable risk that investors must be prepared to accept. This makes precious metals a choice for investors who are willing to take on higher risk for the possibility of greater rewards, distinguishing them from the other options which generally involve lower risk profiles.