A Researcher Is Conducting a Study on a New Type

Multiple Choice

A researcher is conducting a study on a new type of insurance that has been released for professionals in jobs that pose a high risk to their life.The researcher,who has substantial experience in this field,has decided to select people who serve as fire fighters and fighter pilots following his own assessment of the people who would serve as good prospects for this insurance.The researcher has used ________ sampling here.

A) stratified random
B) cluster
C) simple random
D) judgment
E) probability