select all the correct answers. when doing medical research with human subjects, which four limitations are…

select all the correct answers. when doing medical research with human subjects, which four limitations are unavoidable? its often impossible to repeat trials on the same subjects. subjects may report an inaccurate medical history. it can be difficult to control all possible variables. its impossible to come up with testable scientific questions for human subjects. there are ethical or privacy concerns to consider.
Answer
Brief Explanations:
- Repeating trials on same subjects may not be possible due to health - related changes or unavailability.
- Subjects might forget or misreport their medical history.
- In human research, controlling all variables like lifestyle, genetic factors is challenging.
- Ethical and privacy issues are always a concern in human - subject research. It is possible to come up with testable scientific questions for human subjects.
Answer:
- It's often impossible to repeat trials on the same subjects.
- Subjects may report an inaccurate medical history.
- It can be difficult to control all possible variables.
- There are ethical or privacy concerns to consider.