Final answer:
The three mandatory elements of information necessary to book a suspect are name, offense, and location of arrest.
Step-by-step explanation:
The three mandatory elements of information necessary to book a suspect are name, offense, and location of arrest. These elements are important for accurately identifying and documenting the suspect and the crime they are being booked for. The name helps in identifying the individual, the offense describes the crime they are accused of, and the location of arrest provides context and jurisdiction for the arrest.