Apatient's complaint of urinary frequency is called a

a. ros.
b. hpi.
c. pmh.
d. cc.

The answer is:  [D]:  " CC " .

Note:   "CC" stands for "chief complaint" ; in this context.

Choice:  [A]:  "ROS" ; which stands for "review of systems";      
     is INCORRECT ;  (since these would be more complex than what is                                          described in this very question).

Choice:  [B]:  "PHI" ; which stands for "Protected Health Information" ; is         INCORRECT.  "PHI" is more comprehensive and  refers to refers to legal issues and procedures regarding safeguarding and disclosing an individual's (e.g. a patient/client) medical records / conditions / treatment / progress notes—and medical conditions and other personal information and test results related to the patient/client— including aspected related to the "electronic health record (EHR)"—especially as mandated under provisions of the federal HIPAA (Health Information, Portability, and Accountability Act) of 2006.

Choice: [C]:  "PMH" ; which stands for "past medical history" ; is            
       INCORRECT.
The information given in the question:
      "A patient's complaint of urinary frequency." — would generally refer to the current complaint.  "PMH" — or "past medical history" — which could be extremely subjective and may be cursory and only recorded to the extent deemed relevant as asked by and determined by the doctor/ provider to patient/client. Note that the mention of PMH by no means implies that the patient/client NO LONGER HAS THAT CONDITION.

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)