Comprehensive and Detailed Step-by-Step Explanation:
* Reference to Analytical Techniques:
* Trend Analysis involves examining data over a period to identify patterns, shifts, or anomalies.
* This technique is appropriate for longitudinal data like sales over four years.
* Reasoning:
* Option B (Trend analysis) is correct as it helps the auditor analyze sales performance over time and identify patterns or deviations.
* Option A (Ratio analysis) compares related metrics, such as profitability or liquidity, but does not focus on changes over time.
* Option C (External benchmarking) involves comparing performance to external standards or competitors, not internal historical data.
* Application in Audit:
* Trend analysis allows the auditor to assess growth, seasonal patterns, or irregularities in sales data, providing actionable insights.

Comprehensive and Detailed Step-by-Step Explanation:
* Reference to Benchmarking:
* External benchmarking involves comparing the organization's metrics with those of other entities, typically competitors or industry averages.
* Standard 1210 - Proficiency: Internal auditors must have knowledge to evaluate performance against external benchmarks effectively.
* Reasoning:
* Option B demonstrates external benchmarking by comparing the organization's return on equity with a competitor's performance.
* Option A and Option C focus on internal analysis within the organization and do not use external references.
* Application in Internal Auditing:
* External benchmarking identifies competitive gaps, informs strategic decisions, and supports recommendations for improvement.

Comprehensive and Detailed Step-by-Step Explanation:
* Risk Assessment in Planning: Conducting a risk assessment typically follows documentation of the process, as understanding the process provides the necessary context for identifying and evaluating risks.

Comprehensive and Detailed Step-by-Step Explanation:
* Address Matches an Employee's Residence: This is a strong indicator of fraud, as it suggests the possibility of a fictitious vendor created to divert funds to the employee.

Comprehensive and Detailed Step-by-Step Explanation:
* Root Cause Analysis: This method identifies underlying causes of issues rather than just addressing symptoms, allowing internal auditors to recommend targeted improvements to controls and processes.
By identifying multiple causes, auditors can propose tailored control enhancements to address each cause effectively.