Final answer:
Ethical limitations of qualitative studies include ethical violations in data collection, subjective interpretation bias, and limited control over variables, all of which may compromise the study's integrity and the safety of study participants.
Step-by-step explanation:
The ethical limitations of qualitative studies include a few key points. Firstly, ethical violations in data collection refer to those scenarios in which research does not adhere to established ethical guidelines, potentially harming participants or compromising the integrity of the data. Secondly, the subjective interpretation bias points to the fact that researchers' personal beliefs and perspectives can influence their interpretation of qualitative data. Lastly, while not strictly an ethical issue, limited control over variables speaks to the inherent nature of qualitative research where the researcher often has less control over variables compared to quantitative research, thereby affecting the reliability and validity of the study.