The phrase "an opinion formed based on facts" suggests a connection to evidence, as evidence is typically used to support or inform opinions. However, it wouldn't be the most accurate description of evidence itself.
Evidence is generally defined as information, facts, or data that are used to support a claim or assertion. A more precise definition might be: "information that demonstrates the truth of a statement or helps establish the validity of an argument."
So, while your option hints at something related to evidence, it does not directly define what evidence is.