Of the following, which best illustrates an example of a mixed methods study that addresses students' selection of a major at a large land-grant university?
◦ Bonnie interviews high school students about their career aspirations and follows them through their second year of university collecting interview data every 3 months.
◦ Jonna uses high school grades, SAT scores, and university placement exam scores to classify likely success in a given major.
◦ Pui-wa collects career placement survey data and conducts follow-up interviews with a portion of the respondents selected based upon their major.
◦ Karen uses high school grades, university grades, and scores on a career placement survey to predict students' major.