The population of the United States is approximately.
A.900 million
B.300 million
C.500 million
D.1.3 billion

The answer is i believe low birth rights.hope my answer is the one you are looking for : )

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.