When Carys AMA stepped toward a patient to explain the hospital preadmission procedure abruptly took step backwards. which of following is most likely reason for patient?

The most likely reason for the patient's reaction is that Carys AMA's sudden movement triggered the patient's startle reflex.

The startle reflex is an involuntary, defensive reaction to unexpected loud noises or sudden movements. It involves a rapid increase in muscle tension, heart rate, and breathing, and is accompanied by a flinching or jumping movement.

In this case, Carys AMA's unexpected step backward may have startled the patient, causing them to react with a startle reflex and step backward in response.