Final answer:
The IBC classifies buildings by type of construction and occupancy type and use, ensuring safety and setting requirements for fire protection and structural integrity. The correct answer is option d.
Step-by-step explanation:
The International Building Code (IBC) primarily classifies every building based on type of construction and occupancy type and use. The classification system is designed to ensure the safety of buildings in terms of structural integrity, fire protection, and safe occupancy. It is utilized to assess the risks associated with a building and to determine the safety measures needed.