The answer is True.
Hope this helps :)
Saline solutions have the same or close to the same amount of salt as our blood does, so we get the amount of salt needed for our bodies. During blood loss, you lose the salt you need, so they're basically adding it back in with the saline solution, making your electrolyte balance go back to normal level. It also gives us the right amount of water to keep us hydrated.
All of the above options are correct because all the given three options are possible
The answer to this would be C.
As children grow, they gain more cells due to multiplication.