After a thorough research, there exists the same question that has the following choices:
1. HF(l)
2. HCl(l)
3. HBr(l)
4. HI(l)
The correct answer is (1) HF(I). When hydrogen is attached to a more electronegative atom, then molecules get more polar. HF has the strongest hydrogen bonding together with the electronegativity of the fluorine atom.