The correct answer is: It can be proven using objective evidence.
To be<em> factual</em> is to use or consist of facts, meaning the information provided can be proven and its characteristics are not altered by external interpretations (opinions from others).
Just as facts, <em>objective evidence</em> can be proven by observation and analysis. Regarding the excerpt, it can be proven that Hossack was struck at the head by analyzing his corpse, and that the crime took place "a few miles out from Bedford" by visiting the crime scene.
Factors exogenous to a country's current level of income are identified as being responsible for some 84% of the increase in life expectancy during the period. ... But neither country's mortality has been directly affected by its own income; the effect shows up as a shift in the curve.
Answer:
cuz he was so annoying and wasn't listening
If you look at a dictionary to substantiate is to support an opinion or claim with proof or evidence. So a Substantiated opinion is an opinion that is backed up with proof.
Hope this helps :)