Which tool does the audit team utilize to select random samples from data populations?

The audit team uses RAT-STATS to select random samples from data populations because it is specifically designed for statistical analysis of data used in auditing processes. RAT-STATS is a statistical software tool that helps auditors perform various sampling methods, including random sampling, which is critical for ensuring the reliability and validity of audit results. By leveraging this tool, the audit team can achieve a representative sample that provides insights into the integrity of the data being examined, thereby supporting the overall objectives of compliance and risk management within the NERC Critical Infrastructure Protection framework.

The other tools mentioned do not have the same focus on random sampling or statistical analysis as RAT-STATS, making them less suitable for this particular task.