Maintenance ofof the body such as temperature level, water content, pH and blood pressure to be in balanced and stable condition

This is homeostasis of the body I believe.

Answers are 1,2,4 its correct on edgenuity.

Molarity is moles of solute over liters of solution. idk if that is what you are talking about, but you can convert moles of solute to grams of solute using dimensional analyzes by using molar mass found on the periodic table.