B: to help liberate people from oppressive governments
Since a vacant piece of land can be used to produce goods and services, it is a factor of production.
Since the antique sewing machine is used to produce clothing, it is a factor of production.
Since Randy is using his labor as a mechanic, his time and effort are factors of production.
This means that all of the above are factors of production.
Answer:
I think it is friction but if it is not I am sorry!
Explanation: