What is the purpose of the secondary flight controls?

Question

Question PPL(A) - Private Pilot License - Aircraft General Knowledge

QuizVDS · Accepted Answer

To improve the performance characteristics of an aircraft and relieve the pilot of excessive control forces

QuizVDS · Answer

To constitute a backup system for the primary flight controls

QuizVDS · Answer

To improve the turn characteristics of an aircraft in the low speed regime during approach and landing

QuizVDS · Answer

To enable the pilot to control the aircraft's movements about its three axes

Id 30 - PPL(A) EN - What is the purpose of the secondary flight controls?