From above given diagram , it is clear that
Region 2 presents the boys who are cricketer and sober.
Hence , required answer will be 2 boys .

On the basis of above given question , we know that
Some land animals are sea animals .
Some sea animals are land animals .
Both Land animals and sea animals are Animals .
From above it is clear that option D is correct answer .

From the given above diagram , we can say that
Shaded portion in given diagram represents. Qualified Experienced Doctors working in village i.e. 5.
Hence , required answer will be 5 .

As we know that ,
Editor, Newspaper and Journalist are different classes to each other .
Therefore , option D represents the best relationship between Editor, Newspaper and Journalist .

According to question , we know that
Sun is Stars.
Sun and Stars are in Universe .
From above it is clear that option B represents the best relationship among Universe,Stars and Sun .As shown in given figure .

According to question , we have
Delhi and Srilanka both are in Asia.
From above it is clear that option B represents the best relationship among Delhi, Sri Lanka and Asia .As shown in given figure .

According to above given question , we know that
Doctors consists of Specialist Doctors and Patients but Specialist Doctors and Patients are of two different nature.
Hence , Option (B) is correct.

According to above given question , we can say that
Some guides may be philosophers and vice versa.
Some friends may be guides and vice versa.
Some friends may be philosophers and vice versa.
Some philosopher guides may be friends.
From above it is clear that option ( C ) gives the best relationship between Friend, Guide and Philosopher .

As we know that ,
Crows belong to class Aves. Cow is a mammal.
From above it is clear that option ( B ) represents the best relationship between Mammals, Cows and Crows .

According to above given question ,we can say that
Violinists are Instrumentalists and in turn, Instrumentalists are Musicians.
From above it is clear that option ( A ) gives the best relationship between Musicians, Instrumentalists and Violinists .