Why do planets change their position in the sky, day and night?

The Earth revolves around the sun, cause different parts of the galaxy to appear during different points in the Earths orbit. The Earth also causes start positions to change as well.

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.