Anything can be broken down, as long as it is not as small as an atom
I would say C is the most correct.
In D it depends on what water source you're using. Let's say it is a waterfall, then the source of the water (melting ice or a lake) may disappear in the future.
If you're using underwater "windmills" placed in the ocean, then you would expect it to last a while as the ocean will not disappear in the near future.
Sodium, hydrogen, carbon, and oxygen
1- change of state (boiling)
2-increase in acidity
3-methylxanthines (caffeine) theobromine and theophylline
4- lemon juice
An example is when on a seesaw if a kid is on one side and an adult is on the other then it is unbalanced because the adult weighs more