Answer: Elements common to both A and B.
- A Elements present in set A but not in B
- B Elements present in either A or B or both
- C Elements present in set B but not in A
- D Elements common to both A and B
Correct answer: D. Elements common to both A and B
Explanation: Intersection A intersect B contains only those elements that belong to both A and B.
A Venn diagram makes set identities visual: A∪B is everything inside either circle, A∩B is only the overlap, and the region outside both circles represents the complement of their union - directly illustrating De Morgan's law (A∪B)′ = A′∩B′.
Concept context
Types of sets, operations (union/intersection/complement), relations, and types of functions with domain and range