1. The problem asks: Which data collection technique involves a one-on-one conversation with someone to learn about something? 2. This technique is commonly known as an "interview". 3. An interview is a qualitative data collection method where a researcher asks questions directly to a participant in a one-on-one setting. 4. It allows for in-depth understanding and detailed responses. 5. Unlike surveys or questionnaires, interviews provide flexibility to explore topics more deeply. Final answer: The data collection technique is an **interview**.