It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. The pathway that produces the most NADH and the least ATP is the KREBS CYCLE. Hope this answers your question. Have a great day ahead!
C. This is because the water has undergone a physical change meaning that the effects can be reversed. If nothing was added or lost from the water the ice would be the exact same weight.
