Verbal answers recorded in video interviews are unstructured data because they do not follow a predefined table, field layout, or database schema. The information may include speech, tone, pauses, gestures, and narrative explanations that require transcription, tagging, or text analytics before systematic analysis. Structured data is organized in rows and columns, such as transaction records. Semi-structured data contains some organizing tags or metadata, such as emails or XML files. Quasi-structured data may have inconsistent or irregular formatting. Internal auditors using video, audio, emails, documents, or interview notes should understand that these sources often require specialized methods before analysis. Since recorded verbal responses are not organized in a fixed structure, Option C is correct.
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