Final answer:
The question pertains to a person's legal rights upon being detained or accused, including being informed of the reasons for arrest and warned about self-incrimination. These safeguards are fundamental to due process in the criminal justice system.
Step-by-step explanation:
The question "What's 'th other thing I'm entitled to know?" appears to refer to the rights of individuals who are either being detained or accused of a crime. Specifically, these rights include c. a prisoner's right to be informed of why they are being held and d. the right of the accused to be warned that anything they say may be used against them in court. These rights are crucial to ensuring fair treatment and due process within the criminal justice system.
The right to be informed of the reasons for arrest is essential for an individual to understand the charges against them and to prepare a defense. Similarly, the right to be warned of self-incrimination, often delivered in the form of a 'Miranda warning' in the United States, alerts the accused that their statements can have legal consequences and allows them to make informed decisions about cooperating with law enforcement.