What can Splunk dashboards visualize?

Splunk dashboards are designed to visualize machine-generated data, which can be presented through various formats such as charts, graphs, and tables. This flexibility allows users to display the information in an accessible manner, making it easier to interpret complex datasets. Dashboards can be configured to pull data from various sources, thus enabling users to see trends, patterns, and anomalies in real-time or historical contexts. The focus on machine-generated data emphasizes Splunk's primary role in handling and analyzing the vast amounts of log and event data created by systems and applications, providing insights that assist in decision-making processes, troubleshooting, and monitoring system health.

While there are elements in the other options that relate to data visualization, they do not encapsulate the full breadth of what Splunk dashboards can achieve. They may mention specific types or scopes of data but lack the comprehensive nature and functionality conveyed in the correct choice.