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A process audit focuses on the adequacy and effectiveness of process controls (choice C). Product audits (choice A) evaluate finished items, while profitability (choice B) is unrelated. Strategic objectives (choice D) belong in system audits. According to ASQ’s CQA BoK, process audits assess how procedures, resources, and activities interact to meet requirements, ensuring both compliance and performance improvement.

An audit plan must define scope, objectives, and criteria (choice B). Salaries (choice A), regulatory inspections (choice C), and reviews (choice D) are unrelated. According to ASQ’s CQA BoK, a well-prepared audit plan ensures alignment, focus, and efficiency.

The Fishbone Diagram (choice A) categorizes potential causes into groups like materials, methods, manpower, and machines. Histograms (choice B) display data spread. Scatter Diagrams (choice C) identify relationships. Control Charts (choice D) track variation over time. According to ASQ’s CQA BoK, fishbone diagrams are essential for structured root cause analysis.

A Histogram (choice B) graphically shows the distribution of process data, making it ideal for analyzing spread and central tendency. Flowcharts (choice A) map steps, Pareto Charts (choice C) prioritize causes, and Scatter Diagrams (choice D) examine correlations. The ASQ CQA BoK identifies histograms as a key statistical tool for auditors to evaluate variation and detect abnormalities in data.

Maintaining confidentiality reflects professional integrity (choice A). Analytical ability (choice B) and technical expertise (choice D) are important but unrelated to confidentiality. Assertiveness (choice C) aids communication but does not protect data. According to ASQ’s CQA BoK, integrity includes protecting sensitive information, building trust, and ensuring compliance with ethical and legal standards.