Answer
“Individual results will vary” shows surety as true hence tautology but “Individual results may vary” does not show surety as true hence negation.
Work Step by Step
The statement “Individual results will vary” shows the surety of truth value as true, but the statement “Individual results may vary” does not show the surety of truth value as true. Hence, the statement “Individual results will vary” is a tautology and the statement, “Individual results may vary” negates the advertised products’ effectiveness.
Example:
The universal truth statement is a tautology because, it always givesthe truth value as true.