What are three JSON data types used in JavaScript?

In JSON, data is structured using three fundamental types: SCALAR, OBJECT, and ARRAY. A SCALAR represents a single value, such as a string, number, boolean, or null. An OBJECT is an unordered collection of key-value pairs, where keys are strings and values can be any JSON data type. An ARRAY is an ordered list of values, where each value can also be any JSON data type. The options GET, PUT, and DELETE, or GET, PUT, and POST, refer to HTTP methods used in RESTful APIs for interacting with resources, not JSON data types. SCALAR, POST, and OBJECT is incorrect because POST is an HTTP method, not a JSON data type.