Answer:
The correct answer is: D) veterinarian.
Step-by-step explanation:
The IRB, abbreviated from Institutional Review Board, is a committee that approves or rejects investigations by basing on ethics.
Of the people involved in the IRB decision regarding a study, a veterinarian is the least likely to participate in the board because his o her field does not extend to that field. However, a scientist, a librarian at the institution and a grocer with an interest in academic research, are much more likely to be involved.