The circulatory system takes the carbon dioxide from the cells to the lungs and the respiratory system expels ir.
I think I found your question online and if the questions are the same, the answers would be A. B. and C. Once again, you do not have to take this answer because I am unsure if I found the same chart that you have.
Answer: Combining a basic API with citric acid to produce the citrate salt of the API.
Explanation:
Chemical modifications refers to the processes that involve changes in the general composition of drugs to produce another entity with different chemical properties.
From the answer, Basic API combine with citric acid to produce the citrate salt of API which have different chemical properties from the reactants.
I took the test the answer (for sure) is c: programmed cell death. Good Luck!