Answer:
Thesis statement
Step-by-step explanation:
Here's a potential thesis statement for your essay:
While the Auschwitz concentration camp serves as a painful reminder of one of the darkest moments in human history, it should be preserved as a memorial to honor the victims and educate future generations about the atrocities committed during the Holocaust.
This thesis statement suggests that even though the camp may be deteriorating and many survivors are passing away, there are still valid reasons for preserving it. You could use the rest of your essay to explore these reasons in more detail, such as the educational value of the site, the importance of remembering and honoring the victims, and the potential risks of allowing the site to fall into disrepair or be lost to history.