During an arrest, what right must be communicated to the individual being arrested?

The right that must be communicated to the individual being arrested is the right to remain silent. This right is a fundamental component of the Miranda warning, which is required to ensure that individuals are aware of their constitutional protections under the Fifth Amendment, particularly the right against self-incrimination. When law enforcement officers arrest someone, they must inform the individual of their right to remain silent, making it clear that anything they say can potentially be used against them in court. This serves to protect the individual's rights during the legal process and ensures that any statements made are done so voluntarily and with an understanding of their implications.

The other options, while they relate to various legal rights, do not need to be communicated at the moment of arrest as part of standardized procedure. The right to a trial typically follows an arrest and requires due process, the right to contact a family member is not universally required, and the right to appeal pertains to the judicial process after conviction, not at the time of an arrest. Thus, focusing on the right to remain silent is essential in safeguarding the arrested individual's legal rights right from the point of arrest.