Answer:
The client
Step-by-step explanation:
The client is the primary primary source in any situation involving the use of biographical data in a medical setting. Biographical data is basic information about the patient such as name, address, marital status, gender and age, for example. All this data is taken from the client himself and for this reason, the client is a source of biographical information that the nurse should consider as the main one. Biographical data are important because they serve as a basis for defining treatment and hospitalization patterns if necessary.