Question

which protein complex splits water? photosystem ii nadph photosystem i chlorophyll

Explanation:

In the light - dependent reactions of photosynthesis, Photosystem II is responsible for splitting water molecules. This process releases oxygen as a by - product and provides electrons for the electron transport chain. NADPH is a product of the electron transport chain, Photosystem I is involved in later steps of the electron transport and reduction of NADP⁺, and chlorophyll is a pigment that absorbs light energy but does not directly split water.

Answer:

Photosystem II