Made many items themselves.
A. Settlers
B. Farmers
C. Pioneers

I think Settlers because even though pioneers are the first ones to do something themselves, it doesn’t mean that they specifically ‘made many items themselves’. So its settlers.

There’s no picture or character?

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.