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 .

On the basis of above given question, we can say that
Some sisters may be wives and vice?versa.
Both sisters and wives come under the class women.
Hence , option ( B ) represents the best relationship between Women, Sisters and Wives. As shown in given venn - diagram .

As we know that ,
Redgram is different from moongdal but both are pulses.
From above it is clear that option ( A ) represents the best relationship between Pulses, Redgram and Moongdal. As shown in given venn - diagram .

Let us assume the two persons who can speak two languages speak Hindi and Tamil. The third person then speaks all the three languages.

Tamil ? Number of persons who can speak is 6. Only Tamil 6 ? 2 ? 1 = 3

Hindi - Number of persons who can speak is 15. Only Hindi 15 ? 2 ? 1 12

Gujarati ? Number of persons who can speak is 6. Only Gujarati 6 ? 1 = 5

Thus the number of persons who can speak only one language is 3 + 12 + 5 = 20

Number of persons who can speak two languages = 2

Number of person who an speak all the languages = 1

Total number of persons = 23.

No. of people who read Hindu = 285
No. of people who read TOI = 127
No. of people who read IE = 212
Now,
No. of people who read Hindu and TOI both is = 20
No. of people who read TOI and IE both is = 35
No. of people who read Hindu and IE both is = 29
Let No. of people who read Hindu , TOI and IE all is = x ;
So, only Hindu is = 285-20-29-x = 236-x ;
Only TOI is = 127-20-35-x = 72-x ;
Only IE is = 212-35-29-x = 148-x ;
Now, 236-x + 72-x + 148-x + 20 + 29 + 35 + x + 50 = 500 590 -2x = 500
So, x = 45 this is the value who read all the 3 dailies.
So, No. of people who read only one paper is = 236-45 + 72-45 + 148-45 = 191 + 27 + 103 = 321.