Correct option is D
From the given Venn diagram:
·
Houses having a Dog and a Parrot only =
6
·
Houses having a Dog and a Cat only =
8
·
Houses having a Parrot and a Cat only =
2
These are the regions where only two pets are owned without the third.
Final Calculation:
6+8+2=16
Thus, the number of houses that have
only two pets is
16.