RAS question
Which Venn diagram best represents the relationship among: Sun, Moon, Stars?
Correct answer: (D) Sun is inside Stars, Moon is separate from both.
The best Venn diagram has the Sun inside the set of Stars, with the Moon separate from both.
Explanation
This is a class-inclusion question, not an astronomy-detail question. NASA Science identifies the Sun as the solar system's only star, so the Sun must be shown as a member of the larger category, Stars. The Moon is a natural satellite, not a star and not the Sun. Therefore, its circle cannot overlap with either the Sun or Stars in this relationship. The correct diagram is the one where Stars is the larger set containing Sun, while Moon stands outside both.
Why the other options are wrong
- (A) Putting Moon inside Stars wrongly treats the Moon as a star, whereas it is a natural satellite.
- (B) Three separate circles miss the fact that the Sun is itself a star and must lie inside the Stars set.
- (C) Overlapping all three would imply shared membership among Sun, Moon, and Stars, but the Moon is neither the Sun nor a star.
Concept
This tests Venn diagrams for set-subset and exclusion relationships. Such questions recur in RAS reasoning because they check whether candidates can translate ordinary categories into precise logical sets.