I NEED HELP MY EYES IT BURNS I JUST SAW SO MANY SHADES OF WHITE

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What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

Can someone me with this question/ give me the answer? you!