Which constructs can you use in a Puppet module for varying service resource behavior based on memory?

In Puppet, the need to vary service resource behavior based on memory can be addressed through conditional constructs that allow for decision-making based on the values of variables. The chosen option effectively identifies the appropriate constructs that can facilitate this.

Using an if statement allows for straightforward conditional logic; you can check specific conditions related to memory usage and then define the behavior of the service resource accordingly. If certain memory thresholds are met, the configuration of the service can be altered.

The case statement provides a way to handle multiple conditions more efficiently, allowing the user to evaluate a single variable against a set of possible values, which can also relate to varying memory thresholds or categories.

The inclusion of a selector, while related to decision-making in Puppet, is less commonly referred to as a specific construct in this context. Hence, its pairing in the option does not provide a comprehensive approach to managing conditional service resource behavior in relation to memory.

All in all, option C's combination of if statement and case statement covers the necessary logical constructs to implement varying service resource behavior based on memory effectively.