The 3rd Amendment prohibits:

• A. No Quartering of Soldiers
• B. Speedy and Public Trial
• C. Unreasonable Searches and Seizures
• D. Cruel and Unusual Punishment

Answer: (A)

The main idea is that citizens must not be forced to house soldiers in their private homes. The Third Amendment blocks quartering of soldiers in peacetime, and in wartime only under a procedure called by law. This protection arose from historical abuses where armies were housed in private residences without consent, so it guards the sanctity of the home from military intrusion.

That’s why the best choice is the one describing no quartering of soldiers. The other options protect different rights from other amendments: speedy and public trial relates to criminal prosecutions, unreasonable searches and seizures guard against unwarranted government intrusions, and cruel and unusual punishment limits punishments.