According to above given question , we can say that
Tables are different from chairs.
But both come under the class Furniture.

Correct Option: B

According to above given question , we can say that
Tables are different from chairs.
But both come under the class Furniture.
It is clear that option ( B ) represents the best relationship between Tables, Chairs and Furniture. As shown in given venn - diagram .

On the basis of above given question , we know that
Tiger is different from Lion.
Both are Animals.

Correct Option: C

On the basis of above given question , we know that
Tiger is different from Lion.
Both are Animals.
From above it is clear that option ( C ) represents the best relationship between Tiger, Lions and Animals. As shown in given venn - diagram .

As we know that ,
Function keys are different from letter keys but both are parts of keyboard.

Correct Option: B

As we know that ,
Function keys are different from letter keys but both are parts of keyboard.
It is clear that option ( B ) represents the best relationship between Keyboard, function keys and letter keys. As shown in given venn - diagram .

On the basis of above given question , we can say that
All writers (C) and all pianists (B) are doctors (A).

Correct Option: B

On the basis of above given question , we can say that
All writers (C) and all pianists (B) are doctors (A).
From above it is clear that option ( B ) will be required answer .

As we know that ,
College students are different from school students.

Correct Option: B

As we know that ,
College students are different from school students.
From above it is clear that option ( B ) represents the best relationship between student, college and school. As shown in given venn - diagram .