Concept:This sentence tests the correct use of the past perfect verb phrase "had never been" together with the adverb "so" to modify "insulted".Explanation:After "had never", the past participle "been" is needed to form the past perfect tense.The adverb "so" means "to such an extent" and it must be placed before the word it modifies, which is "insulted".So the correct word order is "been so insulted", not "so been insulted".Thus, the completed sentence is: "John said he had never been so insulted in his life."Answer:B. been so