According to the Belmont Report, the requirement that the benefits and burdens of the research are equitably distributed, expresses the principle of:. A. Justice.
B. Respect for persons.
C. Beneficence.

Option A (Justice) is the right approach.

Explanation:

A definition of justice argues everyone else has the same entitlement to fundamental freedoms, as well as they must be entitled to comparable possibilities and opportunity, as others with reasonable diligence.The moral responsibility to take measures per an equal judgment amongst conflicting claims may be articulated below.

The other alternative isn't related to the given instance. So the above is the correct option.

Your answer is  d.)relationship between pressure and air volume and led to the understanding of how respiration works