Pay up.
The final interpretation is correct, they’re asking why we ended Apollo and never followed up. Apollo itself had 6 missions that landed and men walked on the surface.
As for the question of why we never returned, you have to understand that Apollo was really and primarily and fundamentally a political mission. The sole purpose of going to the moon was a mission to beat the Soviets. They were beating us on all the space milestones, and it was a showdown over who had the better technological base (i.e. who could nuke you to kingdom come more accurately) and who had the better political/economic/social system (democracy/capitalism vs communism). Once we won the race (Apollo 11), and it appeared the Soviets were uninterested in followup (their program was in dire straights from a major disaster), the political will of our government was gone.
Now consider that Apollo was kicked off by Kennedy and not fulfilled till about 9 years later under Nixon. In that time we had Viet Nam flare up and begin to garner massive public scrutiny. Then there was the civil rights movement, and Martin Luther King, Jr.'s death. And the assassination of Bobby Kennedy. The public was suddenly scrutinizing the government on a lot of issues, and the refrain “We can put a man on the moon but we can’t…” became popular, though most people failed to realize reaching the moon was a technological challenge, not a social problem.
As for the science on Apollo, there was some, but it was basically a tag-along. “Hey, we’re going to the moon, let’s at least collect some rocks or something, and see if there’s something we can learn while we’re there.” Lot’s of stuff was investigated and lots of knowledge gained, but the science alone wouldn’t have gotten us to the moon by '70.
I know that’s a diversion from your primary question, but the whole Man On The Moon question has been a hot button topic for a while, so I wanted to address that point.
Other interesting resources
Apollo Lunar Surface Journal: nice transcripts of the moonwalks, and all the lunar surface pictures online. http://www.hq.nasa.gov/alsj/frame.html
The Smithsonian National Air and Space Museum on Apollo: http://www.nasm.edu/apollo/apollo.htm
The Apollo Saturn website: tons of technical info on the Apollo equipment. http://www.apollosaturn.com/index.html
The Bad Astronomy review of the Fox program in question: it shows just how horrendously inaccurate that program was. A must read for anyone giving that program any credibility. http://www.badastronomy.com/bad/tv/foxapollo.html