True or False: A metric definition may only be referenced by one dashboard resource record.

A metric definition is designed to be versatile and can be referenced by multiple dashboard resource records. This capability enhances flexibility and efficiency, allowing different dashboards to utilize the same metric without needing to create duplicates. This means that various dashboards can display the same data point or analysis through a single metric definition, promoting consistency across reports and visualizations.

The other options imply limitations on how metric definitions can be used, which do not align with the functionality typically provided in dashboarding tools. The ability to reference a single metric definition across multiple dashboards supports better data management practices and simplifies updates or changes to metrics, as any alterations made to the metric definition will reflect across all relevant dashboards.