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 .

According to above given question , we can say that
Dog is different from tiger.
But both are carnivores.

Correct Option: C

According to above given question , we can say that
Dog is different from tiger.
But both are carnivores.
From above it is clear that option ( C ) represents the best relationship between Dog, Carnivore and Tiger .

From above given question , we can say that
All mothers are women.
Some women are mothers.
Some mothers may be engineers.

Correct Option: D

From above given question , we can say that
All mothers are women.
Some women are mothers.
Some mothers may be engineers.
From above it is clear that option ( D ) represents the best relationship between Women, Mothers and Engineers. As shown in given venn - diagram .

From above given diagram , we can say that
The letters b and d are present in both the circles.

Correct Option: B

From above given diagram , we can say that
The letters b and d are present in both the circles.
Therefore , option ( B ) is correct answer .

According to question , we can say that
Women graduate sub–inspectors of police can be represented by the region common to all the three geometrical figures. Such region is marked '3'.

Correct Option: B

According to question , we can say that
Women graduate sub–inspectors of police can be represented by the region common to all the three geometrical figures. Such region is marked '3'.
Therefore , option ( B ) is required answer .