An Emergency Medical Responder is ventilating an apneic adult using a BVM.

NREMT guidelines specify that adult ventilations with a BVM should be delivered over approximately 1 second, just enough to see visible chest rise. Forceful, rapid ventilations increase the risk of gastric inflation, aspiration, barotrauma, and hypotension.

Option B is correct because slowing the rate and reducing force improves ventilation effectiveness and patient safety.

Option A may be important, but the primary error described is ventilation speed.

Option C is inappropriate for an apneic patient.

Option D is only indicated if the patient is pulseless.

NREMT emphasizes controlled, gentle ventilations to minimize complications.