Which of these molecular properties makes water (h20) a polar solvent?

a) the hydrogen (h) atoms hold the electrons in the covalent bonds more closely than the oxygen (o) atom, and the oxygen atom develops a partial positive charge.

b) the oxygen (o) atom holds the electrons in the covalent bonds more closely than the
hydrogen (h) atoms, and the hydrogen atoms develop a partial positive charge.

c) the oxygen (o) atom holds the electrons in the covalent bonds more closely than the
hydrogen (h) atoms and develops a partial negative charge.

d) the hydrogen (h) atoms hold the electrons in the covalent bonds more closely than the oxygen (o) atom and develop a partial negative charge.