I would only prompt someone for their gender when it's really necessary, and then use the reasoning for that necessity to form the prompt. For instance, how we

I would only prompt someone for their gender when it's really necessary, and then use the reasoning for that necessity to form the prompt. For instance, how we ask someone to selecting a character trait in a video game should probably differ from how we ask them a similar question on a medical form. Gender can surprisingly tricky, and I don't believe there's a good "one size fits all" approach to this question.