A local hospital wanted to assess the way its patients were being treated.The hospital hired several researchers to act as patients and record the way hospital personnel handled the admitting and preliminary evaluation procedures.What sort of research is being conducted in this example

A)  naturalistic observation 
B)  correlational research 
C)  reactivity 
D)  case study

Preliminary Evaluation Procedures

Initial assessment techniques used to determine the potential value, feasibility, or impact of a project, plan, or research study.

Naturalistic Observation

An investigative technique where participants are studied in their natural settings without interference from the researcher.

Hospital Personnel

Individuals employed within a hospital setting, encompassing a wide range of roles from medical professionals to support and administrative staff.