Select the Venn diagram that best represents the relationship between the following classes.
Iron, Metals, Copper
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) →
In a Venn diagram two circles overlap when some members belong to both classes, one circle lies inside another when every member of the first belongs to the second, and circles stay apart when the classes have no common member.
Iron and copper are both metals, so both circles lie inside the circle of metals
Iron is not copper, so these two circles stay apart inside it
There are other metals too (such as gold), so the large circle has room outside the two small ones
One large circle with two separate circles inside, as in Option (2)
