Which statement best characterizes the purpose of load combinations in structural design?

Which statement best characterizes the purpose of load combinations in structural design?

• A. A single load applied repeatedly to test durability.
• B. A theoretical ratio of loads used only in wind design.
• C. A specified group of loads applied together with factors to reflect extreme conditions; it ensures the structure remains safe under simultaneous loads without excessive overdesign.
• D. The sum of dead load and live load only.

Answer: (C)