Which of the following statements represents opinion not a logical argrument?

A. "The sky is blue because of the scattering of sunlight by molecules in the atmosphere."

B. "The iPhone is the best smartphone on the market."

C. "The theory of evolution has overwhelming scientific evidence to support it."

D. "Vanilla is a versatile and universally loved flavor."

Answer: D. "Vanilla is a versatile and universally loved flavor."

The above statement is a matter of opinion and personal preference, rather than a logical argument based on evidence or reasoning.