A. is a duty of congress. They can say a law is unconstitutional based in their views on the law but they cant declare one unconstitutional. But the President can declare a law unconstitutional and change it.
It’s very very quick and strong
Explanation
The five criteria which help democracy to successed are as follows:
1. wide spread education.
2.Citizen participation
3. Existence of strong civil society
4. Favorable economy
5.Existence of social consensus.
These factors work together to produce strong democracy government.
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