Select the Venn diagram that best illustrates the relationship between the following classes.
Spectacles, Lens, Mirror
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 
The least possible Venn diagram for the elements Spectacles, Lens, Mirror can be -
All spectacles have lenses.
No mirror is a spectacle or a lens.
Hence, is the correct answer.