Which two structures does JSON support?

JSON, which stands for JavaScript Object Notation, is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. The two primary structures that JSON supports are Object and Array.

An Object in JSON is an unordered set of key/value pairs, where the keys are strings and the values can be strings, numbers, arrays, objects, true, false, or null. This structure allows for complex data representations and nesting, making it powerful for representing real-world data.

An Array, on the other hand, is an ordered list of values. These values can be of any type, including strings, numbers, other arrays, and objects. This flexibility allows JSON to represent lists of items in a clear and organized manner.

The other options focus on pairs that can exist within JSON but do not encompass the primary structural formats that JSON defines. JSON does not support individual structures such as String, Number, or Boolean as standalone primary structures; those are types of values that can be used within Objects and Arrays. Consequently, the correct answer highlights the foundational elements that form the core of what JSON is designed to handle.