Ethicist: Some would ban cloning on the grounds that clones would be subpeople, existing to indulge the vanity of their “originals. ” It is not illegal, however, to use one person as a vehicle for the ambitions of another.
Implied Conclusion
Banning cloning because clones would exist to indulge the vanity of their "originals" is not a good reason.
Implied Intermediate Conclusion
We already tolerate "clones" that exist to indulge the vanity of their "originals": parents and children.
Evidence
It's not illegal to use a person as a vehicle for your ambitions. Maybe you wanted to be a tennis player or a chemist so you push your child (your 'clone') to achieve in those areas. You don't have to have been born in a test tube to be an extension of someone's ego.
Evaluate
This is a weird argument since the author is rebutting the first sentence but never explicitly issues a rebuttal conclusion. We can just surmise from the context that she's saying,
Goal
The question is asking us about the second sentence, which was part of the author's Support (the 2nd, 3rd, and 4th all helped support the author's implicit rebuttal).