Answer:
A.) zero
Step-by-step explanation:
In the Lewis structure of water it is formed a perfect 8 electrons around the Oxygen atom, as you know all element tend to the 8, could be by giving electrons or receiving, Hydrogen has 1 sole electron and oxygen has 6, this means that oxygen needs 2 more to complete 8, so if you add the 1 of each molecule of hydrogen they form 8 electrons, so there won´t be any loose electrons.