Answer:
The Nazis singled out the weak, young, disabled and elderly because those groups are easy and vulnerable. They thought these groups were unworthy to live even though they were human beings. Hitler viewed them as “marginal human beings” who had to make a case for their own survival at a time when the nation was preparing for war. He thought these people were not going to survive on there own so he killed them.
Explanation:
(I dont know if this helps but here u go)
