Minority Programmers Association data science internship interview questions

Had a behavioral interview which I passed then was given a list of prompts for the coding challenge and my job was to choose one. I chose the one I found interesting but then said my submission wasn't "challenging" enough and wanted me to do another prompt. I literally did what the prompt asked for, nothing more/nothing less. If they thought the prompt was too easy then, it shouldn't have been on the list. Someone who's willing to work for free for entry level experience shouldn't have to go through a second test because they're trying to learn, not join FAANG.