What is the problem of self-identity? Which is the correct solution to the problem of self identity?

Choose one of the following ontology topics on which to write a 750?
1000 word essay. Be sure to answer any question or questions found
in the topic you choose. Review How to Write a Good Response Paper
and Writing Guidelines and Grading Rubric, both on the Course Home
page, before writing your essay.
What is the problem of self-identity? Which is the correct solution to the problem of self identity? (Be sure that you solve the ?Lexus problem? with your answer, even if your solution is to allow Smith not to pay for it. Also, it would be helpful for you to define identity in your answer.)