Police in the United States must useprocedures that adhere to which of thefollowing?a. Third Amendmentb. Fourth Amendmentc. First Amendmentd. None of the above

To determine which procedures police in the United States must adhere to, let's analyze the given amendments:

1. Third Amendment: This amendment prohibits the quartering of soldiers in private homes without the owner's consent during peacetime, which is not directly relevant to police procedures.

2. Fourth Amendment: This amendment protects against unreasonable searches and seizures, requiring law enforcement to have probable cause and, in many cases, a warrant for searches. This is highly relevant to police procedures.

3. First Amendment: This amendment guarantees freedoms concerning religion, expression, assembly, and the right to petition. While it influences policing in relation to protests and free speech, it’s not primarily about police procedures concerning search and seizure.

4. None of the above: This option suggests that police procedures are not governed by any of the mentioned amendments, which is incorrect.

Conclusion:

The correct answer is b. Fourth Amendment, as it directly governs police procedures related to searches and seizures, emphasizing the necessity for them to act within the boundaries of constitutional rights.