What were the two rovers that landed on Mars in 2004?

The correct response identifies Spirit and Opportunity as the two rovers that landed on Mars in 2004. These rovers were part of NASA's Mars Exploration Rover Mission, and they were designed to explore the Martian surface and gather data to assess past environmental conditions. Spirit landed on January 4, 2004, and Opportunity followed shortly after on January 25, 2004.

Both rovers far exceeded their original 90-day mission expectations, with Opportunity operating until 2018. They provided significant insights into the presence of water on Mars and contributed extensively to our understanding of the planet's geology and history.

In contrast, the other options refer to different missions. Curiosity and Perseverance are later missions, landing in 2012 and 2021 respectively. Viking 1 and 2 were earlier missions from the 1970s that were significant but not part of the 2004 exploration. Sojourner, which was part of the Mars Pathfinder mission, landed in 1997 and predates the Spirit and Opportunity rovers.