Why does it say some things are correct and others not? Of the easy questions, I disagreed with the first: a search field with square corners is perfectly fine

Why does it say some things are correct and others not? Of the easy questions, I disagreed with the first: a search field with square corners is perfectly fine. I apparently misunderstood the context of the fourth, a red or blue phone icon that apparently was intended to mean "hang up" ("Destructive action button color"), but that bit of context was not made clear, so I thought it would start a call and of course chose the blue one. Then I quit. Obviously this test is incorrect and ill-conceived. Maybe I'm just getting old.