Answer:
respect for persons
Explanation:
Belmont Principle mentioned three basic ethical principles which are: Respect for Persons, Beneficence, and Justice.
However, principles of Respect to persons is the ethical position that, participants in research should be anonymous, and in a case where anonymity is not guaranteed such participants should be protected.
Hence, in this case, the use of a consent form showed that this is an example of the Belmont principle of RESPECT FOR PERSONS,
I believe the answer is B Blockade runners