Question

Which social scientist primarily studies how people change resources into goods and services

Answer 1

The social scientist that primarily studies how people change resources into goods and services is called: economist

Basically, Economist study how people will utilize the resource that they have at their disposal to fulfill their needs. (for example, you can't use words directly as your clothing and paper)
A lot of  Resources that people found around the environment often couldn't directly fulfill their needs. So, they transform those resources in a form of goods and services so it can fulfill it.