Choose from the given diagrams the one that illustrates the relationship among three classes. China, India, Asia

As we know that ,
Editor is different from Journalist.
Similarly, Newspaper is different from both the Editor and Journalist.
But, all the three inter-related in some manner.
It is clear that option ( D ) represents the best relationship between Editor, Newspaper and Journalist. As shown in given venn - diagram .

As per the given above question , we can say that
Teachers are different from students.
But both are included in the society.From above it is clear that option ( B ) represents the best relationship between society, teacher and student.

As we know that ,
Class teacher is different from girls and boys of Standard VIII. Similarly, girls are different from boys.
It is clear that option ( B ) represents the best relationship between Class teacher, Girls and Boys. As shown in given venn - diagram .

On the basis of above given question , we know that
Parents include Mother and Father but Mother is different from Father.
From above it is clear that option ( C ) represents the best relationship between Parents, Mothers and Fathers. As shown in given venn - diagram .

As per the given above question , we can say that
Some black eyed people may be brown haired and vice-versa.
Some black eyed people may be Indians and vice-versa.
Some brown haired people may be Indians and vice-versa.
Some black eyed and brown haired people may be Indians and vice-versa.
It is clear that option ( A ) represents the best relationship between Black eyed people, Brown haired people, Indian.

As we know that ,
Physician, Physical Education Instructor and Physicist are different from one another.
Hence , option ( C ) represents the best relationship between Physician, Physical Education Instructor and Physicist. As shown in given venn - diagram .

As per the above given question , we can say that
Dividend is different from Bonus.
But both are parts of Profit.
It is clear that option ( B ) represents the best relationship between Profit, Dividend and Bonus.. As shown in given venn - diagram .

On the basis of above given question , we can say that
Some singers may be boys and vice-versa.
Some boys may be dancers and vice-versa.
Some singers may be dancers and vice-versa.
Some singers who are boys may be dancers.
From above it is clear that option ( C ) represents the best relationship between Singers, Boys and Dancers. As shown in given venn - diagram .

As we know that ,
Gold is different from silver.
But both are used for making ornaments.
It is clear that option ( A ) represents the best relationship between Ornaments, Gold and Silver. As shown in given venn - diagram .

As we know that ,
Duck is different from Penguin.
But both are birds.
It is clear that option ( A ) represents the best relationship between Duck, Penguin and Bird. As shown in given venn - diagram .