What motivates you?
If the interviewer were to ask this question to someone in sales, their answer might be money in the form of commissions. A fintech data analyst, on the other hand, would likely be driven by other motivations. Not that earning a good salary isn't important to you, but the interviewer will want to hear that you're also driven by the desire to discover previously unknown trends in the data, to solve business problems, and to finish all the tasks on your to-do list.
"I would say that I'm mainly motivated by a job well done. I have a very strong work ethic that was instilled in me by my parents, and when my manager gives me a task I strive to complete it efficiently and in a timely manner so I can earn their approval and know that I did it to the best of my ability. Second, I tend to view data as a puzzle, and I am driven by the challenge of solving the 'puzzle.' So I don't just get my work done for my manager; I get it done so I can rest easy in knowing that I tackled the data and extracted all the insights I could from it."