What is the syntax for creating a JavaScript array?

The correct syntax for creating a JavaScript array is achieved by using either the 'var', 'let', or 'const' keywords followed by an assignment of an array enclosed in square brackets. Specifically, the correct option utilizes 'var' to declare a variable named 'colors' and initializes it with an array containing the string elements "red," "green," and "blue."

This approach is valid because it clearly establishes a variable that points to an array, which is a fundamental data structure in JavaScript used to hold multiple values in a single variable. The brackets indicate that the variable is indeed an array, and the commas separate the elements within that array, adhering to the language's syntax rules.

The alternate option using 'let' realizes a similar outcome, also correctly forming an array, but this was not the selected answer, even though it is technically correct. The other options presented either misuse syntax or misinterpret how arrays are initiated in JavaScript, lacking the necessary syntax or structure for array creation.