On Randy Alcorn's blog, I saw this commercial advocating the importance of seat-belts:
I imagine that very few (if any) people are offended by this ad, though it advocates restricting a person's choice to not wear a seat-belt. Our government requires drivers to wear seat-belts, and failure to comply is a punishable crime. I do not know anyone who finds it morally repugnant that our government hinders the person's "right to choose" on this matter.
The government can indeed, and does, tell people what to do or what not to do with their bodies. So in the discussion on abortion, it will not do for the advocate of choice to simply say, "I do not believe the government can tell a person what to do with their bodies."
Our seat-belt laws makes this clear as can be.