What type of information can Terraform variables store?

Terraform variables are designed to be flexible and can store a wide range of input values that can be referenced within your Terraform configuration. This includes primitive data types such as strings and numbers, as well as more complex types like lists, maps, and even custom objects. By allowing inputs of various types, Terraform enables users to write more dynamic and reusable configurations tailored to different environments and use cases.

For example, you can define variables for instance types, availability zones, and even entire configuration blocks, making your Terraform scripts more modular and easier to manage. This capability is crucial when working with infrastructures that may have different parameters based on deployment scenarios.

In contrast, limiting the input to strings and integers, environmental variables only, or exclusively network configuration parameters fails to showcase the full potential of Terraform variables and would restrict the flexibility and usability that Terraform offers in infrastructure-as-code practices. Therefore, the answer correctly reflects the broad applicability and diverse nature of input values that Terraform variables can handle.