Why is the traditional classification of agriculture as a primary economic activity a problem when considering the geography of agriculture

In the developed world, women are increasingly more likely to delay childbirth until their mid- to late- twenties or long because

The pacific islands that lie along tectonic plates may have volcanic activity are uninhabited may not have agricultural economies are located in the tasman sea

How far is a geographic second? a.) around 100 feet b.) around 1,000 feet c.) around 5,000 feet d.) none of the above