Opportunity cost is the value of the next best alternative forgone as a result of making a decision.
Answer:
B-There might not be enough soldiers to protect the nation.
Explanation:
The refusal of citizens to serve the army may result in the reduction in the number of soldiers that may lead to a situation where there might not be enough soldiers to protect the nation.
The United states has a federal system of government because power is shared between the central and state governments.
