I would think that the answer is D. all of these, considering that:
1) The cytoplasm is mostly made of water, but also contains salt, enzymes, organelles, and orgaince molecules; 2) The cytoplasm supports and suspends cellular molecules and organelles; and 3) Chemical reactions also occur in the cytoplasm, and the enzymes it contains help speed up these reactions.
Metabolic Alkalosis means a blood pH of > 7.45, caused by a chemical base excess in the blood or loss of acid [H+], but not due to hyperventilation. ABG should show: ^HCO3-, dec. H+, pH>7.45, nml or ^CO2