Final answer:
H₂O (water) option A, is the compound with polar covalent bonds due to the difference in electronegativity between hydrogen and oxygen, which leads to an uneven distribution of electron density.
Step-by-step explanation:
The compound among the options provided with polar covalent bonds is H₂O (water). In water molecules, oxygen has a higher electronegativity compared to hydrogen, resulting in an uneven distribution of electron density. This difference creates dipole moments where one end of the molecule is slightly negative (oxygen end) and the other end is slightly positive (hydrogen end), leading to polar covalent bonding. Other compounds like CsF₂, S₈, Ne, and CH₄ either don't form covalent bonds or have nonpolar covalent bonds due to an even distribution of electron density or symmetry.