The brake must hold the rope firmly during a sudden pull of the rope for safety.
Answer 2 is incorrect because the brake opens during a sudden pull of the rope. If the seat belt is opened When pulling the rope suddenly, it will not fix the person sitting with the chair, causing danger in case of unexpected problems
Sufficient quantity, installed firmly without tearing, broken, buckle closes, gently opens, does not open by itself, does not get stuck; pulls out and retracts easily , locking mechanism that holds the rope firmly in the event of a sudden pull.
Sufficient quantity, sure to be installed without tearing, broken, buckle closes, gently opens, does not open by itself, does not get stuck; pulls out and retracts easily , the brake opens when pulling the rope suddenly.