In Puppet, which directive allows you to include other classes in your manifests?

The directive that allows you to include other classes in your Puppet manifests is the "include" directive. This directive is essential for organizing Puppet manifests by enabling the reuse of defined classes within other classes or nodes. When you use the include directive, Puppet ensures that the specified class is evaluated and its resources are applied as part of the catalog compilation process.

This functionality enhances modularity and maintainability in your Puppet code, allowing you to break down complex configurations into smaller, manageable sections. It is common practice to define reusable classes for common configurations and then include them in multiple manifests.

The other options do not provide the same capability. The "require" directive is used to establish dependencies between resources, ensuring that one resource is applied before another. "Import" is not a recognized directive in Puppet, and "extent" is also not a valid directive. Therefore, "include" is the only correct choice for integrating class definitions into Puppet manifests.