Answer:
The correct option is B. An economist might use this example to define resource immobility.
Step-by-step explanation:
Resource immobility can be described as a resource that happens to be of no competitive advantage. The resource is easy to obtain but competitors do not consider using it.
For example, in the scenario discussed in the question above, a similar plant is available in another city but the unemployed people do not want to avail that facility. The workers might compete for working in the closed plant but there is no such competition to work in the plant that is out of state.