In the year 2001, NASA launched a spacecraft to Mars named

The spacecraft NASA launched to Mars in 2001 was the orbiter known as 2001 Mars Odyssey (commonly called Mars Odyssey). Official mission information lists the launch date in April 2001 and identifies the spacecraft as Mars Odyssey, which reached Mars orbit later that year and began aerobraking into its final science orbit by early 2002 [1]. Historical accounts note that after failures of Mars Climate Orbiter and Mars Polar Lander in 1999, the planned 2001 lander was canceled and only the orbiter was sent, renamed the 2001 Mars Odyssey, which arrived at Mars in October 2001 [2]. Hence option 3 is correct.

Sources

1. [1] https://www.jpl.nasa.gov/missions/mars-odyssey/
2. [2] https://www.planetary.org/articles/1347