(A) Gas
(B) Water
(C) Air
(D) None of these
🧠 Explanation:
- This phrase is part of a famous proverb: "Blood is thicker than water."
- It means family or blood relations are stronger than other relationships.
- It's a metaphor, not a scientific statement about density or fluids.
- Among all given options, only “water” completes the actual proverb correctly.