#4 a.

Mr. Frank breaked down and lost total control of his weaping when he saw the white gloves. I am definitely sure that they had been Anne's because on page 420/421 of the text book there is a mentioning of Anne wearing short white gloves. "She picks up a pair of short white gloves." From this clue I had inferred that these were Anne's gloves. I think the reason Mr. Frank had wept primarily was because she was his sweet daughter who had died at such a short age. It also had horrifying memories of the Nazis who had killed so much of his beloveds as well as his daughter who was so optomistic and ambitious. Well, these gloves had brought him harsh memories that had swept him completely that he cried in agony.