Which of the following is not phi:
a. the birthdate of a person who is being treated for diabetes.
b. a statement about the number of individuals seen by the hospital for treatment of depression in 2014.
c. the addresses of all of the individuals who saw dr. smith, a dentist, in the last year.
d. the list of medical services paid for by an individual identified only by his social security number.

A. The birthdate of a person who is being treated for diabetes.

Explanation:

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.