I believe the answer to your question is Initiative. 
I feel this because the definition of an initiative is a process in which citizens can put a proposed new law directly on the ballot in the next election by collecting voters' signatures on a petition. 
        
                    
             
        
        
        
The answer is (A.) 20 seconds. A collision occurs every 20 seconds. A collision is an interaction of two or more bodies that exert forces in a very short duration. The term collision also refers to the two moving objects that collide.
        
             
        
        
        
Answer:
- <em>A well-organized police force.</em>
 
A functioning government depends on a police force to enact its laws, and to persecute those who do not follow them. The police also ensures that the government has a "monopoly on violence," one of the basic requirements of a state. Finally, the police also provides assistance and protection to citizens.
- <em>Interstate commerce regulations.</em>
 
Commerce fulfills many needs of society. It redistributes goods, encourages cooperation, provides a source of income for people, and connects different regions. However, unregulated commerce can be a problem for the government. Therefore, commerce regulations are necessary for any well-established government.
 
        
                    
             
        
        
        
The economic term is the opportunity cost.
The concept of opportunity cost is a relatively inexpensive and relative measure that involves people's preferences, so it varies from person to person. It is a question of comparing what is left over when making a decision.
In Katie's case, the opportunity cost of the money she saves to buy a car is what she fails to do with that money. For example, she stops investing in stocks, fails to make a trip, etc.
All decisions involve an opportunity cost. Taking another example, the opportunity cost of studying for the test at the end of the week is measured by the loss of leisure you would have. However, the decision to study for the test is chosen because it is more valuable.