Data Analysis Plan

Hi! I would like to ask for a suggestion on what tool i would use for Data Analysis with regards to a problem concerned with the extent of public's acceptance with the use of alternative modalities of treatment compared to chemically-prepared drugs..

..I'm selecting among content analysis, phenomenological approach or grounded theory approach..
..but I think there's still a better tool for this topic since the 3 tools I mentioned are not that appropriate.. However, if you see one that fits, from the three choices, kindly inform me.. Thank you!