Which famous Roman statesman is well known for helping protect the republic during times of crisis and demonstrating an act of unselfishness by giving up his
powers when the job was done?

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.

A) it is created from magma