Hello! you will need to demonstrate proficiency in the German language, as many undergraduate programs are taught in German.To prove your proficiency in German, you may be required to provide a certificate from a recognized language test such as TestDaF (Test Deutsch als Fremdsprache) or DSH (Deutsche Sprachprüfung für den Hochschulzugang). Additionally, some universities may accept English language proficiency tests such as TOEFL (Test of English as a Foreign Language) or IELTS (International English Language Testing System) if the program is taught in English. However, it's essential to check with the specific university and program you're interested in for their language requirements.