What does 'additional instructions' refer to?

• A. Primary work scope only
• B. Clarifications to the initial scope
• C. Supplementary instructions / work added on after the initial work scope
• D. Delivery schedule

Answer: (C)

Additional instructions are changes or additions that come after the initial scope has been defined. They describe supplementary work or directions that extend beyond what was originally agreed, usually needing new estimates, resources, or adjustments to plans. This is why the best choice is the one that specifies supplementary instructions or work added on after the initial work scope. The other options describe elements tied to the original plan (the main scope) or to timing (delivery schedule) rather than to extra guidance or tasks. Clarifications to the initial scope might refine understanding, but they don’t imply new work beyond the original scope.