Which amendment requires a search warrant to be obtained for searches?

The Fourth Amendment is the correct choice as it explicitly protects citizens from unreasonable searches and seizures by requiring law enforcement to obtain a search warrant supported by probable cause. This amendment is a fundamental part of the Bill of Rights and reinforces the right to privacy, ensuring that individuals are secure in their persons, houses, papers, and effects against arbitrary government intrusion.

By establishing the necessity of a warrant, the Fourth Amendment aims to safeguard personal freedoms and limit governmental power, requiring that a judicial officer evaluate the validity of the search prior to it being conducted. This process is essential for maintaining the rule of law and upholding individual rights in the face of potential abuse of power.

In contrast, the other amendments mentioned focus on different rights and protections, such as freedom of speech and religion (First Amendment), the quartering of troops (Third Amendment), and rights in civil cases (Seventh Amendment), none of which pertain to the establishment of search warrants.