What is a "claim of fact"? Responses A claim that can be proven or verified by observation or research. A claim that can be proven or verified by observation or research. A claim that can be proven by the author's opinion. A claim that can be proven by the author's opinion. A claim that can be proven by emotion and personal experience. A claim that can be proven by emotion and personal experience. A claim that can be proven by the author's background and credibility.%C2%A0 A claim that can be proven by the author's background and credibility.