What will be the result of the following code: arr.map(x => x * 2) on the array [1, 4, 9, 16]?

The result of using the map function with the provided code is that it takes each element of the original array and applies the function that doubles its value. The map method creates a new array populated with the results of calling the provided function (in this case, x => x * 2) on every element in the array.

Given the original array [1, 4, 9, 16], let's walk through how the map function processes each element:

1. For the first element 1:

   • The function doubles this value, resulting in 2.

2. For the second element 4:

   • The function doubles this value, resulting in 8.

3. For the third element 9:

   • The function doubles this value, resulting in 18.

4. For the fourth element 16:

   • The function doubles this value, resulting in 32.

Thus, after processing all elements of the original array, the resulting new array will be [2, 8, 18, 32]. This is why the correct answer is indeed the one that reflects this transformation. The reasoning clearly follows the use of the map function in