When defining a function in JavaScript, which keyword is typically used?

In JavaScript, the keyword used to define a function is "function." This keyword serves as a fundamental part of the language's syntax for creating reusable blocks of code that can perform specific tasks. When you declare a function, you start with the "function" keyword followed by the function name, parentheses for parameters, and curly braces to encapsulate the function's body where the code logic is written. This structure allows JavaScript to recognize that a new function is being created, enabling it to be invoked elsewhere in the code.

Using "function" is essential because it clearly indicates to the JavaScript interpreter that what follows is a function declaration. The other terms—such as 'define', 'create', and 'method'—do not serve this purpose in JavaScript. While 'method' may refer to functions that are properties of an object, it is not a keyword used for defining functions globally or in a standalone context. Thus, selecting "function" is the correct and only appropriate choice for defining functions in JavaScript.