Schengen area means

The Schengen area allows free movement without passport checks; this question tests international policy. Covering 26 European countries; it’s not about restrictions or visas; C is correct. Understanding agreements enhances geopolitical awareness; this is vital for exams or travel discussions; Schengen shapes EU mobility; knowing terms aids in diplomatic analysis; accurate knowledge ensures clarity in conversations about European travel or integration; staying informed strengthens general knowledge; C aligns with the policy.