Which of these sets of economic activities is completely primary?

The set of economic activities that is completely primary is fishing, lumbering, farming, and mining, as they are all considered primary economic activities. Primary economic activities involve the extraction and production of raw materials from natural resources, such as land, water, and minerals. Fishing involves catching fish and other seafood from oceans, rivers, and lakes. Lumbering involves cutting down trees for wood and paper products. Farming involves cultivating crops and raising livestock for food and other products. Finally, mining involves extracting minerals and other valuable resources from the earth. In contrast, transportation and manufacturing are considered secondary economic activities as they involve the processing, refining, and manufacturing of raw materials into finished products. Banking and trading are considered tertiary economic activities as they involve the exchange of goods and services rather than the production of raw materials.