Here are the answers to your questions:
Question 2:
The correct answer is Probable cause. This legal standard requires reasonable grounds to believe that a crime has been committed or that evidence of a crime may be found in a specific location before an arrest or search can be made.
Question 3:
The correct answer is Affidavit. An affidavit is a written statement confirmed by an oath or affirmation, used as evidence in court.
Question 4:
The correct answer is Exclusionary rule. This legal rule prevents the government from using evidence obtained in violation of the Fourth Amendment (protection against unreasonable searches and seizures), as well as evidence that is derived from such violations (the "fruit of the poisonous tree" doctrine).
If you have further questions or need more assistance, feel free to ask!