If a class is inherited but not declared, what happens in Puppet?

In Puppet, when a class is inherited but not explicitly declared, it is automatically included in the scope of the parent class. This behavior allows for a modular and organized way to manage configurations and resource declarations. By automatically loading the inherited class, Puppet ensures that the functionalities defined in the inherited class are applied wherever the parent class is included.

This automatic inclusion supports the idea of reusing code and simplifies the management of configurations, since developers do not have to manually declare every inherited class. As a result, this feature enhances the flexibility and maintainability of Puppet manifests, making it easier to build upon existing classes without repetitive declarations.

The other options do not reflect the behavior of Puppet in this context, since the language is designed to facilitate inheritance, rather than blocking it or throwing errors when it occurs.