Question

Select the Venn diagram that best illustrates the relationship between the following classes.

Sister, Brother, Friend

• A. A
• B. B
• C. C
• D. D

Answer 1

Answer:

C. C

We need a diagram that shows how Sister, Brother, Friend relate.

Sister and Brother are mutually exclusive → a person cannot be both.

Friend can overlap with both → a sister can be a friend, a brother can be a friend.

But Sister and Brother do not overlap with each other.

Now check options:

A: All separate → wrong (friends can be sisters/brothers)

B: All three overlap with each other → wrong (sister & brother shouldn’t overlap)

C: Middle circle overlaps with both outer circles, but outer circles don’t overlap → correct

D: One inside another → wrong

Final Answer: C