How do you reference an element in an array using its index?

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Referencing an element in an array using its index is correctly done through bracket notation. In many programming languages, such as Python, Java, and JavaScript, arrays are structured such that each element can be accessed by its position within the array, which is denoted by an index inside brackets. For example, if you have an array named myArray, you would access the first element of the array using myArray[0], where the index 0 is placed inside the brackets.

This notation is intuitive because it clearly indicates that you are selecting an element based on its positional order. Bracket notation is universal across various programming languages that support arrays, making it a critical concept to understand in concepts of computer science and programming.