Concept:In syllogism, a conclusion follows only if it is definitely true in all possible cases.
Explanation:From "No verb is article", verbs and articles are completely separate.
"Only a few nouns are verb" means some nouns are verbs, while some nouns are not verbs.
"Some articles are not preposition" does not fix a definite relation between articles and prepositions.
Conclusion I: Some prepositions are verbs — not definite, because prepositions have no confirmed link with verbs.
Conclusion II: All verb is noun — not definite, because "only a few nouns are verb" does not prove every verb is a noun.
Conclusion III: Some article is noun — not definite, because no direct relation is given between articles and nouns.
Therefore, none of the conclusions logically follows.
Answer:Option A: None of the conclusion follows.