How do you store compound data in memory?

Storing compound data in memory involves representing data that can hold multiple related values together as a single entity. The correct choice here is to use structures, which are specifically designed to handle complex data types and group related fields under one defined type.

Structures allow developers to create a custom data type that can include various data types and attributes in an organized manner. For instance, if you need to store information about a person, you might create a structure with fields for name, age, and address, all encapsulated within a single data type. This makes it easier to manage and pass around data as a cohesive unit, improving the readability and maintainability of code.

In contrast, while variables can store single pieces of data, expressions calculate values and are not meant for data storage, and functions are primarily used to execute code rather than directly store complex data types. However, you can define and use structures within variables but the essence of storing multiple related data points is best encapsulated by the use of structures on their own. This makes structures the most appropriate and efficient choice for storing compound data in memory.