What right ensures that researchers do not deceive or coerce participants in a study?

The correct answer focuses on the ethical principle that protects research participants from being misled or coerced into participating in a study. This right is vital in maintaining the integrity of the research process and ensuring that all participation is fully voluntary and based on informed consent.

When researchers are bound to the right to absence of participant deception, it means they must provide truthful information about the study's purposes, procedures, and any potential risks or benefits. This transparency is crucial for participants to make an informed decision about whether to participate. Informed consent is a foundational element of ethical research practice.

Other concepts mentioned, such as participant completion or adequate compensation, do not directly address the issue of misleading or coercing participants, which is fundamental to the ethical conduct of research. Additionally, the right to absence of sponsor deception pertains to the relationship between the researchers and their funding sources rather than the protection of participants themselves. Hence, the focus on ensuring participants are not deceived or coerced is what makes the selected answer correct.