8. Geologists have evidence of an igneous rock formation under Earth's outer layer. Is it possible that material from this rock formation could ever form sedimentary rock on Earth's surface?

Answerscripps institution of oceanography; i believe this is correct plz check first good luck;

5×^2+20-15 or -(5x^2-20+15)

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.