Which contributes to the polarity of a water molecule?

It’s molecular shape.

When the two hydrogen atoms bond with the oxygen, they attach to the top of the molecule rather like Mickey Mouse ears. This molecular structure gives the water molecule polarity, or a lopsided electrical charge that attracts other atoms. The end of the molecule with the two hydrogen atoms is positively charged.

Is there a diagram/picture you can provide? it seems this question goes along with a

The correct answer should be "electrons orbit the nucleus in circular motions exactly as shown on the classic bohr model."