All of the following is the features of optimum population except

The features of an optimum population are characteristics that describe an ideal population level for a country or region. The features of an optimum population include full employment of available resources, maximum per capita production and income, and a high standard of living. However, one of the options listed, "unlimited amount of unexploited resources," is not a feature of an optimum population. In fact, the concept of an unlimited amount of unexploited resources is not realistic, as all resources are finite and will eventually become depleted if not managed sustainably. Therefore, the answer is "unlimited amount of unexploited resources."