What information is provided in Table 3.4?

The correct choice provides essential information regarding the different license classifications and grades associated with operating high-pressure boilers. This is crucial for ensuring that operators understand the specific qualifications required for various positions or roles in boiler operation. It allows individuals to identify what type of training or certification they need to legally and safely operate these systems, highlighting the importance of following regulatory standards in the field of boiler operations.

Understanding these classifications is vital for compliance with occupational safety regulations and contributes to maintaining safe operating conditions. Proper qualifications ensure that operators have the necessary skills and knowledge to manage high-pressure equipment effectively, minimizing the risk of accidents or failures in the system. The other options, while relevant to the broader topic of boiler operation and safety, do not accurately describe the contents of Table 3.4, which specifically focuses on licensing and classification.