Rubin and Rubin 1995)suggest Three Guidelines for Selecting Informants When

Rubin and Rubin 1995) suggest three guidelines for selecting informants when designing a purposive sampling strategy.What is one of these guidelines?

A) Informants should be knowledgeable about the cultural arena or situation or experience being studied
B) Informant are selected in advance by the researcher.
C) Informants should not be representative of the range of points of view
D) Elements are selected to ensure that the sample represents certain characteristics in proportion to their prevalence in the population.