What is the net change that occurs during the fusion process in the Sun?

I believe it is b, Four hydrogen nuclei join to form a helium nucleus, two neutrinos, and energy.

To understand how the Sun is able to produce as much energy as it does we ... (Note - because strong force changes so rapidly with distance the applet ... In the case of the sun hydrogen atoms are fused together to produce helium in a process ... can precisely quantify how much energy is released during a fusion reaction.

hope this is what you need