16. The major television networks regularly conduct polls in order to ascertain the feelings of Americans on current political issues. In May of 1993, such a poll was conducted by ABC concerning United States involvement in Bosnia. The respondent's gender, political affiliation, and opinion (approve, disapprove, or no opinion) on how President Clinton was handling the situation in Bosnia represented some of the information supplied by the respondent on the survey. Each respondent was also asked to rate the job that the news media had done (excellent, good, not so good, poor) in covering the situation in Bosnia. a. List the different variables measured on the respondents. b. Which variables are quantitative and which are qualitative? c. Give the levels of measurement for these variables. d. What are some problems associated with collecting data in polls such as the one described in this exercise