How did mrfrank survive?

Mr. Frank, from Anne Frank's story, survived the Holocaust by hiding in the Secret Annex of Otto Frank's business premises in Amsterdam. He lived there for over two years with his family and others, relying on the support of non-Jewish friends who provided food and supplies while they remained concealed. However, ultimately, Mr. Frank was the only member of his family to survive the war, as the others were captured and perished in concentration camps.