Theoretical Sampling Is _____________

Theoretical sampling is _____________.

A) a nonrandom sample in which the researcher first identifies general categories into which cases or people will be selected, and then he or she selects cases to reach a predetermined number of case in each category.
B) a nonrandom sample in which the researcher uses a wide range of methods to locate all possible cases of a highly specific and difficult-to-reach population
C) a nonrandom sample in which the researcher selects specific times, locations, or events to observe in order to develop a social theory or evaluate theoretical ideas
D) a nonrandom sample, especially used by qualitative researchers, in which a researcher selects unusual or nonconforming cases purposely as a way to provide greater insight into social processes or a setting