Identify the diagram that best represents the relationship among the classes given below:
Animals, land animals, sea animals

On the basis of above given question , we know that
Some students may be scholars and vice-versa.
Some teachers may be scholars and vice-versa.
Some students may be teachers and vice-versa.
Some students who are scholars may be teachers.
Hence , option ( A ) represents the best relationship between Teachers, Scholars and Students. As shown in given venn - diagram .

As we know that ,
Oxygen is different from Carbon dioxide.
But both gases are found in atmosphere.
From above it is clear that option ( B ) represents the best relationship between Atmosphere, Oxygen and Carbon dioxide. As shown in given venn - diagram .

On the basis of above given question , we know that
Novels are different from Dictionaries.
But both can be included in the class books.
It is clear that option ( D ) represents the best relationship between Books, Novels and Dictionaries. As shown in given venn - diagram .

As we know that ,
Thief comes under the class criminal.
But police is different from the both thief and criminal.
From above it is clear that option ( A ) represents the best relationship between Police, Thief and Criminal. As shown in given venn - diagram .

As we know that ,
Star is different from Moon and Mars (Planet).
Satellite (Moon) is different from Planet.
It is clear that option ( D ) represents the best relationship between Star, Moon and Mars. As shown in given venn - diagram .

As we know that ,
Vegetables and Potatoes are Eatables items .
Eatables will be a big circle and Potatoes will be a small circle .
Therefore ,option ( A ) represents the best relationship between Vegetables, Potatoes and Eatables. As shown in given venn - diagram .

As per the given above question , we know that
Catholics and Pope belong to Christians, but Pope belongs to both Catholics and Christians .
It is clear that option ( B ) represents the best relationship between Christians, Catholics and Pope.

As we know that ,
Humans come under the class Animals.
Birds come under the class Aves.
From above it is clear that option ( C ) represents the best relationship between Humans, Birds and Animals.

On the basis of above given question , we can say that
Apple is different from orange but both are fruits.
Therefore, option ( B ) represents the best relationship between Fruits, Apples and Oranges. As shown in given venn - diagram .

As we know that ,
Some teachers may be painters and vice-versa.
Some teachers may be dramatists and vice-versa.
Some painters may be dramatists and vice-versa.
Some teachers who are painters may be dramatists.
It is clear that option ( D ) represents the best relationship between Teacher, Painter and Dramatist.