A. 3
B. 1
C. 4
D. 9
🧠 Explanation:
An empty set has one subset: itself. This fundamental concept in set theory is crucial for math students exploring logic and computation. It’s a key topic in understanding set operations and their applications in computer science and mathematics. The empty set’s simplicity underpins complex theories, making it engaging for those studying foundational principles in data structures, algorithms, and logical reasoning, with broad relevance in theoretical and applied mathematics.
