Answer:
a. Disclose their potential COI and may answer questions, but recuse themselves from voting
Explanation:
During an Institutional Review Board (IRB) meeting, any IRB member who may have a potential COI with a study under review should be able to reveal their potential COI and participate in the discussion without voting.
COI stands for the certificate of insurance and is issued by company and in any IRB meeting they are not allowed to use the vote right but they can answer their questions and involve their personal opinion on the matters and issues raised during the meetings.