It is best to keep the purpose of the study’s research from the subjects in order to keep their involvement private. select the best answer from the choices provided

It is true that it is best to keep the "purpose of the study’s research" from the subjects in order to "keep their involvement private".

Explanation:

Ethics is very much required to distinguish between acceptable and unacceptable behavior.  It is vital to adhere to "ethical norms" to protect and promote knowledge, truth and prevent misinterpreting the research data. Trust, accountability, fairness, mutual respect is essential for work collaboration. Funding will happen with integrity of research and trust on quality. Confidentiality and mentoring with responsibility protect the communications like papers, records, grants etc.

Idont know which one is right   but i know that c is wrong and a might be wrong