Using Puppet, what is the correct syntax to declare a variable?

In Puppet, variables are declared using the syntax that incorporates a dollar sign ($) followed by the variable name. This notation signifies that you are defining a variable that can be referenced later in your Puppet code.

The correct format of declaring a variable in Puppet is to introduce it with a dollar sign and assign a value to it using the equal sign, as shown in the correct answer: $var = "value". This not only indicates to Puppet that you're defining a variable, but it also allows you to use that variable throughout your Puppet manifest for various purposes, such as in resource declarations, expressions, or other logic.

The other options present syntax that does not conform to Puppet's requirements for variable declaration. For instance, 'var = "value"' lacks the necessary dollar sign, which is crucial for Puppet to recognize it as a variable. The phrases 'declare $var = "value"' and 'define $var = "value"' also deviate from proper syntax. The 'declare' and 'define' keywords are not used for variable declaration in Puppet; rather, they serve different purposes, such as defining resources or defining custom types.

Thus, the correct option effectively demonstrates Puppet's syntax for variable declaration, ensuring that the variable is properly recognized