Final answer:
A multi-level array refers to an array with multiple levels of nesting, while a nested array is any array that is contained within another array without specifying the depth of nesting.
Step-by-step explanation:
The difference between a multi-level array and a nested array can be understood as follows:
- A multi-level array is an array that contains multiple levels of nesting, meaning that it can have arrays within arrays to several layers deep.
- A nested array simply refers to an array that is contained within another array. This term does not specify how deep the nesting goes, and can refer to just one level of nesting or multiple levels.
So, the correct answer to the student's question is option 4): A multi-level array is an array that can have multiple levels of nesting, while a nested array is an array that contains arrays as its elements.