Which attraction can be seen at the Lyndon B. Johnson Space Center in Houston?

A. The Astronaut Training Center
B. The Rocket Garden
C. The Space Shuttle Atlantis
D. The Apollo 17 command module

D. The Apollo 17 command module

The attractions that can be seen at the Lyndon B. Johnson Space Center in Houston include:

1. The Astronaut Training Center: A facility dedicated to training astronauts for space missions.
2. The Rocket Garden: An outdoor display area featuring various rockets and spacecraft.
3. The Space Shuttle Atlantis: A full-scale replica of the Space Shuttle Atlantis, along with interactive exhibits.
4. The Apollo 17 command module: The actual command module from the Apollo 17 mission.

Therefore, the correct answer is D. The Apollo 17 command module.