Which condition is requested so that an aerodrome may be considered controlled?

Question

Question ATPL - Airline Transport Pilot license - Air Law

QuizVDS · Accepted Answer

The aerodrome shall be provided with a Control Tower.

QuizVDS · Answer

The aerodrome shall be located within a Control Zone (CTR) and provided with a Control Tower.

QuizVDS · Answer

The aerodrome shall be located within a controlled airspace.

QuizVDS · Answer

The aerodrome shall be located within a Control Zone.

Id 107 - ATPL - Which condition is requested so that an aerodrome may be considered controlled?