Answer:
The value of x[3] would be "c".
Step-by-step explanation:
Here is a breakdown of the code:
The variable x is initialized as an array with three elements: "a", "b", and "c".
The insertItem function is called with three arguments: the array x, the index 2, and the string "f". This function inserts the string "f" at index 2 of the array x, shifting all other elements to the right.
The modified array x is printed to the console using console.log.
Since "c" was originally at index 2 of the array and the insertItem function inserted "f" at that index, "c" is now at index 3 of the modified array. Thus, x[3] is equal to "c".