Respuesta :
Answer:
Correct answer is A. constitution.
Explanation:
A is the correct answer because Constitution is the most important legal act in every country, and according to it all important decisions are made, including the one about limitation to government's authority.
B is not correct as warranty is usually given to some certain goods not laws.
C is not correct as pardon is usually given to some prisoners.
D is not correct because treaty is usually signed between two or more countries.