Which of the following statements is/are correct? The methods of delivering health services throughout the world are too diffuse and complex to categorize. Although the methods of delivering health services throughout the world are diffuse and complex, scholars have been able to develop four categories or models of health service delivery. Due to scholars' ability to develop categories or models of delivery, little to no consideration needs to be given to country cultures or economics. Due to the uniqueness of country culture and economics, there is little regarding health service delivery that countries can learn from each other