During the light dependent reactions of photosynthesis, water supplies to produce NADPH, an important energy-carrying molecule used to help produce glucose during the light independent reaction.

i believe the answer is a or 1

can you make it bigger i can't see it

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.