C hope that helps have a great day :))))
The answer is written on hand, and sorry for that because I am on driving having no resources except hand and ball point to solve your problem. Sorry for that however answer is given.
After the special pair gives up its electron, it has a positive charge and needs a new electron. This electron is provided through the splitting of water molecules, a process carried out by a portion of PSII called the manganese center^9 . The positively charged P680 can pull electrons off of water (which doesn't give them up easily) because it's extremely "electron-hungry."