Which song was the lead single from Unorthodox Jukebox?

The lead single from Bruno Mars’s Unorthodox Jukebox was “Locked Out of Heaven.”

Released on October 1, 2012, the song was the first single from Mars’s second studio album, Unorthodox Jukebox. Its energetic blend of pop rock and reggae-rock marked a stylistic shift from some of the more retro-soul and ballad-oriented material associated with his debut era.

Mars wrote the song with Philip Lawrence and Ari Levine, and the Smeezingtons handled its main production. Mark Ronson, Jeff Bhasker, and Emile Haynie were also involved in the production. The track became a major commercial success, reaching number one on the Billboard Hot 100 and helping establish the album as a broad, genre-hopping project.

The other choices are songs from the same album, which makes this question easy to confuse. “Treasure,” “Moonshine,” and “Gorilla” all appear on Unorthodox Jukebox, but they were released after “Locked Out of Heaven” in the album’s single campaign. The song’s distinctive rhythmic guitar and clipped vocal phrasing also helped make it one of Mars’s signature hits.