Look at the picture. Volunteers taking part in early clinical trials should be... what?

Volunteers taking part in early clinical trials should be well-informed and understand the nature of the trial, including the potential risks and benefits. It's crucial that they provide informed consent, meaning they need to be fully aware of what participation entails. This includes understanding the drugs or procedures being tested, the duration of the trial, and any possible side effects. Additionally, they should be healthy individuals or meet specific criteria set by the trial, ensuring their safety and the validity of the trial results. Ethical considerations and strict regulatory standards must also be adhered to during these trials to protect volunteer safety and well-being.