Oxygen is produced when
A) electrons are accepted by water at the end of photosystem II.
B) water is split at the initiation of photosystem II.
C) protons from water are used in the production of carbohydrates in the stroma.
D) CO2 is oxidized, and carbon is utilized in the production of carbohydrates.
Answer: B) water is split at the initiation of photosystem II.