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 "include." This directive is specifically designed to make it easy to incorporate and manage different classes within a Puppet manifest. By using the include directive, you can effectively modularize your code, promoting code reuse and organization.

When you use include, Puppet ensures that the specified class is applied and processed, making all the defined resources and configurations within that class available in the current scope. This is particularly useful when managing complex configurations where multiple classes may be interdependent.

The other options serve different purposes. For example, require is used to establish ordering dependencies between resources, ensuring that one resource is applied before another. Import is not a valid Puppet directive, and extent is not applicable in this context. Thus, include stands out as the correct choice for including classes within Puppet manifests.