What is the first action taken when treating a cut or gash on a person's arm?

Washing the cut with soap and water is the first action taken when treating a cut or gash on a person's arm because it helps to remove any dirt, debris, and potential pathogens from the wound's surface. Proper cleaning of the wound is essential to prevent infection and ensure healing. By using mild soap and clean running water, the risk of introducing bacteria into the open injury is minimized, which can significantly impact the overall recovery process.

Other options, such as applying ice directly to the wound or putting gauze pads on it, are not the primary actions because these approaches do not address the need for thorough cleaning first. Leaving the cut open to air is generally not recommended, as it can increase the risk of infection and prolonged healing. Proper wound care starts with cleaning to create a safe environment for healing and to prepare the wound for any further treatment, such as dressing it if necessary.