Which active rivers make a boundary between Botswana and each of the four neighbouring countries

Themes; subfields is the answer

Ibelieve the answer is c. map projections.hope my answer has you : )

The answer is c, i, iii, and iv. this is because farming and mining deal with harvesting raw materials, construction work falls under manufacturing, and piloting a plane is a service. ii is wrong because making bread is using  raw materials to produce goods, which would fall under the secondary sector, not primary.