Describe the Iron Triangle.

• A. Time, cost, and scope
• B. Speed, time, and risk
• C. Cost, quality, and scope
• D. Speed, cost, and quality

Answer: (D)

The Iron Triangle shows how three constraints shape every project: speed (how fast you deliver), cost (how much you spend), and quality (the level of quality or how well the deliverables meet requirements). These are interdependent, so pushing on one constraint forces adjustments in the others. For example, speeding up a project often increases cost or may require compromising quality; increasing quality typically requires more time or more money; cutting costs can slow progress or lower quality. The key idea is that you can’t optimize all three at once—you trade one off against the others to hit a desired balance. In many course materials this trio is described with speed, cost, and quality, which aligns with the answer presented here.