Concept:The word "wiser" is already a comparative adjective, so it cannot be paired with "more" or "most". Use "much" to intensify the comparison.
Explanation:The positive form is "wise".
Its comparative form is "wiser".
In English, we do not say "more wiser" or "much more wiser" because these create double comparatives.
We also do not use "most" with a comparative adjective; "most" is reserved for superlatives.
To show a large difference, the adverb "much" is placed before the comparative form.
Thus, the correct phrase is "much wiser".
The completed sentence becomes: "James appears much wiser than his friends."
Answer:D. much