What function does enabling the 'show moving average' option serve in trend graphs?

Enabling the 'show moving average' option in trend graphs primarily serves to smoothen irregular data. This smoothing process helps in revealing the underlying trends within the data by averaging out fluctuations that may occur due to variability or noise in the individual data points. As a result, users can better discern long-term trends and patterns without being distracted by short-term volatility. This is particularly useful in data analysis where identifying stable trends over time is crucial for forecasting and strategic decision-making.

The other options focus on different aspects of data representation that do not directly correlate with the function of a moving average. For instance, displaying the most recent data point or excluding irrelevant time increments addresses specific visualization needs rather than trend analysis, while highlighting anomalies relates to identifying specific outliers rather than smoothing overall trend lines.