Which syntax is used to declare a package resource in Puppet?

The syntax used to declare a package resource in Puppet is "package { 'resource-name': }". This format is correct because it adheres to Puppet's declarative language structure for defining resources. In this syntax, "package" is the type of resource being declared, and the resource name is enclosed in quotes, which distinguishes it clearly as a string identifier for that specific package resource. The colon signifies the start of the resource's attributes if there are any defined.

In contrast, the other options do not conform to Puppet's syntax rules. For instance, using "package resource 'name' { }" mixes the types and does not provide the correct hierarchical structure. Similarly, "declare package 'resource-name';" does not follow Puppet's resource declaration format, as the use of "declare" is incorrect in this context. Lastly, "resource package 'resource-name' { }" reverses the order of the components and is not a valid syntax for declaring a resource in Puppet. Each of these alternatives fails to represent the proper way to declare resources, underscoring why the first choice is the correct one.