How can Dynatrace JMX plugins be modified beyond an editor's capabilities?

The correct choice highlights that Dynatrace JMX plugins can be effectively modified by downloading and editing the JSON configuration file associated with the JMX plugin. This method allows users to customize various parameters and settings of the JMX monitoring without needing to recompile the application or delve into the source code.

Editing the JSON configuration provides flexibility, as it generally allows for easy adjustments to the monitoring settings like metrics collection intervals, which counters to monitor, and other plugin-specific configurations. This approach can be more efficient for users who may not have access to the original source code or do not want to engage in lengthy recompilation processes.

Modifying JMX plugins via the JSON file is particularly useful because it allows quick iterations and changes, facilitating a more agile development and monitoring environment. Thus, downloading and editing the JSON file becomes the preferred and straightforward method for modifying Dynatrace JMX plugins beyond a simple text editor's capability.