The statement is a fact because it contains an expression that can be proven true.
Explanation:
A fact is an opinion that can be proven true whereas a reasoned judgment is an opinion supported by evidence. The statement that the brain activates a greater part of the brain is verifiable from previously conducted studies that were not cited by the speaker. However, his expression was based on that fact. A reasoned judgment would have expressed the opinion and immediately used facts and statistics to support it.
