According to question , we can say that
City and Country belong to Continent .

Correct Option: D

According to question , we can say that
City and Country belong to Continent .
From above it is clear that option D is required answer .

From above given diagram , we can see that
Number 1 indicates doctors who are not married.

Correct Option: D

From above given diagram , we can see that
Number 1 indicates doctors who are not married.
Clearly , option D is correct answer .

As per the given above question , we know that
Sociology and Psychology belong to Humanities .

Correct Option: A

As per the given above question , we know that
Both Sociology and Psychology belong to Humanities .
From above it is clear that Sociology, Psychology and Humanities represent a best relationship in each other . As shown in given diagram .
Hence , option A is correct answer .

According to question ,we can say that
Some boys are sportsmen .
Some boys are students
Some sportsmen are students.

Correct Option: C

According to question ,we can say that
Some boys are sportsmen .
Some boys are students
Some sportsmen are students.
From above it is clear that option C represents the best relationship between Boy, Sportsman, Student .

As per the given above question , we can say that
Elephant and Wolves bear no relationship to each other while both are animals.

Correct Option: A

As per the given above question , we can say that
Elephant and Wolves bear no relationship to each other while both are animals.
Hence , option A is correct answer .