To answer this question, you can mention the subjects or fields of study that you find particularly enjoyable or interesting. Here are a few examples of how you could respond:
1. "Ich studiere gerne Mathematik, weil ich die logischen Strukturen und die Herausforderung des Problemlösens mag." (I like to study mathematics because I enjoy the logical structures and the challenge of solving problems.)
2. "Ich interessiere mich sehr für Geschichte, vor allem für die Zeit des Mittelalters und die Entwicklung der europäischen Kultur." (I am very interested in history, especially the Middle Ages and the development of European culture.)
3. "Ich finde Biologie faszinierend, weil ich mich für die Natur und die Lebewesen interessiere." (I find biology fascinating because I am interested in nature and living organisms.)
4. "Ich studiere gerne Sprachen, weil ich mich für andere Kulturen und die Kommunikation mit Menschen aus verschiedenen Ländern begeistere." (I like to study languages because I am passionate about other cultures and communicating with people from different countries.)
Your response can vary depending on your actual interests and field of study. It is an opportunity to share what you are passionate about and give the other person a glimpse into your academic pursuits and intellectual curiosity.