Correct option is B
The correct substitution of the highlighted words is (b) more clever than.
Explanation:
In the sentence, a comparison is made between two qualities: cleverness and wisdom. When comparing two qualities of the same subject, we use “more + adjective + than”. So “more clever than” is correct.
Grammatical rule used:
When comparing two different adjectives for the same noun, use “more + adjective + than” structure.
Example: She is more kind than strict.
Information Booster: Superlative and comparative degrees should not be mixed together — "more cleverer" is grammatically incorrect due to double comparison.