foo(2)

• In many programming languages, arrays are indexed starting at 0, so the first element of the array is at index 0, the second element is at index 1, and so on. Therefore, to access the third element of an array named "foo", you would use the index 2 (since the array is indexed starting at 0). This can be done using the syntax foo[2] or foo(2) depending on the programming language. In some languages like Java, you can use foo[2] or foo[3] to access the third element.