Which famous WWII military marketing campaign used the phrase 'Loose lips sink ships' to discourage Americans from inadvertently revealing sensitive information?

During wartime, military forces have often employed sophisticated marketing and psychological operations to influence both enemy combatants and civilian populations. From leaflet drops to radio broadcasts, these campaigns represent some of history's most consequential marketing efforts. Test your knowledge of these military marketing campaigns that may have altered the course of conflicts and shaped world history.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The Careless Talk Campaign
The Loose Lips Campaign
Operation Fortitude
The Manhattan Project Security Campaign