Final answer:
A string is a collection of characters, like an array, where each character can be accessed using an index. The correct answer to the student's question is 'String'.
Step-by-step explanation:
A string is a direct access collection of characters that can be accessed based on their index, in the same manner we access the elements of an array. Similar to arrays, each character in a string can be referenced using an index number. For example, in the string "Hello", 'H' is at index 0, 'e' at index 1, and so on. This makes strings very similar to arrays of characters, therefore answer 1) String is correct.