One researcher asks adolescents to keep a daily journal related to specific sensitive topics. a second asks high school students to interview each other about their use of media in their homes. a third researcher takes "tours" of student's bedrooms and the students explain their various possessions that are special or meaningful. what do these three research approaches have in common? a. they are all quantitative methods. b. none of them will require any analysis of the gathered data. c. they are all qualitative methods. d. they would all be considered unethical according to apa standards