Which events take place in the light-dependent reactions of photosynthesis?
a. light energy is converted sugars; sugars are broken down for energy.
b. light energy is captured by plants; light energy is used to make sugar.
c. light energy is converted to chemical energy; chemical energy is used to make sugar.
d. light energy is captured by plants; light energy is converted to chemical energy.

 light energy into photosystem to. electron in photosystem 2 passes through electron transport and thus the water molecule breaks apart putting another electron in photosystem 2. oxygen is released and Hydrogen goes into lumen making it positive. atp synthease then pulls in Hydrogen+ combining ADP and Pi to make ATP. 
the electron in the transport chain then goes down and loses energy. (what makes lumen positive and pulls in H into ATP synthase) the electron is then accepted into Photosytem 1 which re-excites it and then the electron combines with NADP+ and H+ to make NADPH 

ypc

It allows water to resist freezing and thawing cycle.