Argument: The landing sites can be viewed from space by Moon-orbiting spacecraft
The Apollo moon landings can't have been faked because millions of people have seen the live launches the landings can be seen by spacecraft orbiting the Earth.
The moon landing sites themselves can be viewed and photographed by spacecraft in lunar orbit. In fact, in 1994, the Clementine lunar orbiter photographed the landing site of Apollo 15. In 2001, scientists at Brown University in Rhode Island compared the photographs of the Apollo 15 landing site from Clementine to pictures taken during the Apollo 15 mission from the Endeavour command module. The scientists were able to locate the lander, at the exact point on the lunar surface delimited by NASA during the mission.