Answer:
b.Schwartz (2004) reported on a psychology experiment in 1971 in which volunteers were randomly assigned to be either prison guards or prisoners. Those who became guards quickly turned abusive toward their prisoners, and the experiment was stopped a week ahead of schedule.
Step-by-step explanation:
In text citation (paraphrase) requires only the first name of the author and the year. For example Mitchell, (2009). while in the referencing the following format is used "Mitchell, T. (2009, June 5). Men's health. USA Today, pp. B1, B3".