Answer:
a) Phenomenological method
Step-by-step explanation:
Definitions of all the options are as follows:
Phenomenological: Phenomenology is the study of structures of consciousness as experienced from the first-person point of view.
Ethnography : The scientific description of peoples and cultures with their customs, habits, and mutual differences.
Experimental : Relating to an experiment that is good to describe things that was in trail stage or it involves a hypothesis being tested through the experiment
ex post facto : Ex post facto is a Latin phrase that essentially means "retroactive," or affecting something that's already happened. This research design is a method in which groups with qualities that already exist are compared on some dependent variable
The correct answer is Phenomenological method as the researcher was interested in the person's conscious experience which means the method of choice would be phenomenological as described by the definition above it is study of structures of consciousness experienced.