According to above given question , we know that
Zebra is a grass eating animal but lion is carnivorous. Lions are different from zebra .
Hence , option ( A ) will be required answer .As shown in venn - diagram .

According to above given question , we can say that
Dog is different from Insects.
Flies come under the class Insects.
From above it is clear that option ( B ) represents the best relationship between Insects, Flies and Dogs.As shown in given venn - diagram .

From above given question , we can say that
Judge is different from both the thief and criminal.
The thief comes under the class criminal.
Hence , option ( C ) will be required answer . As shown in given figure .

We can say that
Many villages together constitute a district and many districts together constitute a state.
Hence , option ( B ) will be required answer .

As per the above given question , we can say that
Monitor is one among the students and students are included in school.
From above it is clear that option ( C ) gives the best relationship betweenSchool, Students and Monitors .

According to above given question , we know that
Husband is different from wife both are included in the class "family".
From above it is clear that option ( D ) gives the best relationship between Husband, Wife and Family .

According to above given question , we can say that
Some note-books may be paper .
Some stationery may be paper and note-books .
From above it is clear that option ( A ) represents the best relationship between paper, note-books and stationery . As shown in given venn - diagram .

According to above given question , we can say that
BA students are different from BSc students but both of these classes are included in the class of Degree students.
From above it is clear that option ( B ) represents the best relationship between Degree students, BA students and BSc students . As shown in given venn - diagram .

From above the given question , we know that
All boys are males.
Some boys and some males may be football players.
Some football players may not be males and vice versa is also possible.
From above it is clear that option ( A ) represents the best relationship between males, boys and football players .

On the basis of above given question , we can say that
some of the participants were vegetarians, some others were non-vegetarians. Another group was of non - vegetarians not eating meat and yet another group of people eating meat but not fish. It means that vegetarians are different from non - vegetarians .
From above it is clear that option ( B ) will be required answer. As shown in given venn - diagram .