As per the above given question , we have
Water, Salt and Sugar are three different entities.

Correct Option: B

As per the above given question , we have
Water, Salt and Sugar are three different entities.
It shows that option ( B ) gives the best relationship between water, salt and sugar.As shown in given figure .

As we know that ,
Some Employers may be Doctors and vice-versa.
Some Employers may be Women and vice-versa.
Some Doctors may be Women and vice-versa.
Some Women Employers may be Doctors.

Correct Option: C

As we know that ,
Some Employers may be Doctors and vice-versa.
Some Employers may be Women and vice-versa.
Some Doctors may be Women and vice-versa.
Some Women Employers may be Doctors.
From above it is clear that option ( C ) represents the best relationship between Employers, Doctors and Women
. As shown in given venn - diagram .

According to above given question , we know that
Sparrow cames under the class birds.
But mice is different from the both.

Correct Option: B

According to above given question , we know that
Sparrow cames under the class birds.
But mice is different from the both.
From above it is clear that option ( B ) represents the best relationship between SparrowBirds and Mice . As shown in given venn - diagram .

According to above given question ,we can say that
Dogs come under the class animal.
Some dogs are pets.
Some other than animals are also pets.

Correct Option: C

According to above given question ,we can say that
Dogs come under the class animal.
Some dogs are pets.
Some other than animals are also pets.
Therefore, the correct diagram would be :

According to above given question, we can say that
Cement is different from wood.
But both are building materials.

Correct Option: B

According to above given question, we can say that
Cement is different from wood.
But both are building materials.
From above it is clear that option ( B ) represents the best relationship between Building material, Cement and Wood . As shown in given venn - diagram .