Which social scientist is most concerned with analyzing the relationship between the supply and the demand for goods and services? 1) anthropologist 2) sociologist 3) economist 4) political scientist

The correct answer is economist!

let's look at the other options:
anthropologist: studies people, their cultures and history for example
2) sociologists: studies society and the interaction of people in the society
4) political scientists study politics: political parties and international relations

Economists study markets and human behavior as buyers and sellers, and supply and demand!