Explanation:

- The correct answer is Option 1: Columbia.

- Kalpana Chawla was an astronaut aboard the Space Shuttle Columbia.

- The Columbia disaster occurred on February 1, 2003, when the shuttle disintegrated during re-entry into the Earth's atmosphere.

- Option 2: Discovery

- Space Shuttle Discovery was one of NASA's operational orbiters in its fleet. It successfully completed numerous missions but was not involved in Chawla's last mission.

- Option 3: Enterprise

- Enterprise was a prototype space shuttle used for testing purposes and never flew in space.

- Option 4: Atlantis

- Atlantis was another orbiter in NASA's shuttle fleet. It completed many missions but was not involved in the Columbia disaster.

- Option 5: Challenger

- Challenger was a shuttle that tragically exploded shortly after launch in 1986, but Kalpana Chawla was not aboard it.