Question

hydrogen bonds occur between molecules because
the partially positive hydrogen are attracted to the partially negative oxygen on other water molecules
the partially negative hydrogen are attracted to the partially positive oxygen on other water molecules
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Explanation:

Hydrogen bonds form due to the attraction between a partially - positive hydrogen atom (in a polar molecule like water) and a partially - negative atom (such as oxygen in water). Oxygen is more electronegative than hydrogen, causing a charge separation in the water molecule.

Answer:

The partially positive hydrogen are attracted to the partially negative oxygen on other water molecules