The nurse is providing an in-service on thyroid disorders. One of the attendees asks the nurse. "Why don't the people in the United States get goiters as often? Which statement by the nurse is the best response?

"Iodized salt helps prevent the development of goiters in the United States."

"It is because of the screening techniques used in the United States."

"The medications available in the United States decrease goiters."

"It is a generic predisposition rare in North Americans."