Which of the following is not a primitive data type in JavaScript?

• A) String
• B) Object
• C) Array
• D) Number

Answer: B) Object

Explanation: Primitive data types in JavaScript are types that are not objects and do not possess properties and methods. JavaScript includes the following primitive data types: string, number, boolean, undefined, and null. An object is a data type that is composed of a collection of named values called properties or methods.