Which of the survey methods listed below is preferable when using physical stimuli?

Which of the following is a nonprobability sample in which quotas, based on demographic or classification factors selected by the researcher, are established for population subgroups?

a. Quota sample b. Convenience sample c. Stratified sample d. Systematic sample e. Snowball samples

Once you have chosen a topic for which you can ?nd available source material, you should

A) Establish a focus. B) Begin writing a draft. C) Decide what you can learn about your topic. D) All of the above. E) A and C.