Substituting carbonated soft drinks for dairy products in the diet is a bad idea because the resulting high intake combined with inadequate intake leads to bone loss.
a) sodium; phosphorus phosphorus;
b) calcium magnesium; sodium
c) carbon dioxide; calcium

The correct answer is C) carbon dioxide; calcium.

Explanation:

Carbonated soft drinks contain big concentrations of carbon dioxide, which is the bubbles that we see and feel. When these drinks are included regurly in the diet, the carbon dioxide levels are increased; and according to several studies high carbon dioxide values are related with bone loss.

Additionally, calcium is known for being an important nutrient for both formation and maintenance of bones, so inadequate intake of calcium in the diet results in a bone loss.