While one type of electron transport chain is used to form molecules of ATP, a second electron transport chain

Question

While one type of electron transport chain is used to form molecules of ATP, a second electron transport chain is used

a. in forming molecules of NADPH.

b. to migrate to another proton pump.

c. to produce water.

d. as a fuel for forming another chlorophyll molecule.

Answer 1

i believe it's talking about the photosystems that produce NADPH in plants. besides, the other answers don't really make sense