In photosynthesis process plants absorbs water molecules, through their roots and store it in cells, when the sunlight hits water molecules the water splits into

Question

$\begin{array}{1 1} (a)\; \text{oxygen and hydrogen} \\ (b)\; \text{oxygen and nitrogen} \\ (c)\; \text{hydrogen and nitrogen} \\ (d)\; \text{nitrogen and chloroform} \end{array}$