I believe the answer is: political institutions
In united states, the role of political institutions is to hear the aspiration/principles that held by a specific group of people, and appoint a certain candidate to realise those aspirations/principles into an actual law/regulations.
Explanation: Collusion can lead to: High prices for consumers. This leads to a decline in consumer surplus and allocative inefficiency (Price pushed up above marginal cost) New firms can be discouraged from entering the market by types of collusion which act as a barrier to entry.
Answer: Observational Study
Explanation: Observational study involves observing and measuring specific characteristics without attempting to modify the subjects being studied.
B, air pollution is reduced because carbon dioxide isn’t being put into the air.
If correct mark please! Have a great day!
