Final answer:
The correct answer is that ventricular fibrillation causes sudden cardiac arrest. VF leads to ineffective heart pumping, which can be treated with a defibrillator to restore normal sinus rhythm.
Step-by-step explanation:
The statement regarding sudden cardiac arrest and ventricular fibrillation that is correct is: ventricular fibrillation causes sudden cardiac arrest. Ventricular fibrillation (VF) is a chaotic and ineffective heart rhythm that results in the heart's inability to pump blood effectively, leading to sudden cardiac arrest (SCA). In VF, the electrical signals in the heart are disorganized, causing the heart's lower chambers, the ventricles, to quiver ineffectively instead of pumping. The most effective treatment for VF is defibrillation, which delivers an electrical shock to the heart in an effort to reset its rhythm and allow the sinoatrial (SA) node to re-establish a normal sinus rhythm.