An internal auditor has finalized an engagement of the vendor master file.

According to the IIA Standards, audit communications must be accurate, objective, clear, concise, constructive, and timely. In this case, the auditor’s statement that “controls are as effective as last year” is inaccurate, because the prior year’s report identified significant weaknesses. Equating ineffective controls with effectiveness misrepresents the actual condition, thereby compromising accuracy.

Objectivity (Option C), conciseness (Option A), and constructiveness (Option B) are not the main issue here. The primary weakness is accuracy (Option D).