Deutschland ist Mitglied des Schengener Abkommens. Was bedeutet das?

Germany is a member of the Schengen Agreement. What does that mean?

Explanation

The correct answer is "Deutsche können in viele Länder Europas ohne Passkontrolle reisen." because it matches the German civic, legal, historical, or institutional fact asked in this question, specifically the topic of Schengen-Reisen. The other options do not fit the question correctly.