The Waterfall lifecycle is a sequential approach where phases such as requirements, design, build, test, and implementation are completed in order. Its advantages include strong project control, clear documentation, formal stage approval, and greater predictability around scope, schedule, and cost. These features can be useful where requirements are stable and governance is strict. However, Waterfall is weak when business requirements change frequently. Because requirements are defined early and later stages depend on earlier sign-off, changes can be expensive, slow, and disruptive. Agile and iterative approaches were developed partly to address this weakness by allowing evolving requirements and incremental delivery. Therefore, “quickly and inexpensively reacts to changes in business requirements” is not an advantage of Waterfall. The correct answer is option C.