Concept:Syllogism uses set relationships to determine which conclusions necessarily follow from given statements.Explanation:Some books are toys. No toy is red, so the toy set is completely separate from the red set.Since some books belong to the toy set, those books cannot be red.Thus, at least some books are definitely not red.Conclusion I (some books are red) is not guaranteed because no information links books to red except via toys, which are excluded.Conclusion II (some books are not red) necessarily follows.Answer: