Collecting data over a significant period of time and under different load conditions is essential to establish a meaningful baseline, which can be used to detect anomalies and plan for future capacity needs. Peaks in utilization may only be observed during specific times or events, and capturing data over an extended period ensures that occasional spikes are also included in the baseline. The other options are inadequate because they might not represent the full scope of the environment's performance characteristics. Analyzing only maximum resource utilization or a snapshot of performance at a given time does not provide comprehensive information necessary to establish a detailed baseline.