Final answer:
The study involving the lived experience of recently incarcerated pregnant prisoners would require a Complete level of IRB review due to the vulnerable status of the participants.
Step-by-step explanation:
The research involving the lived experience of recently incarcerated pregnant prisoners would most likely require a Complete level of review, which is often referred to as a full review. In the United States, research that involves vulnerable populations, such as prisoners, is subject to particular scrutiny. Since the study is not likely to fall under exempt or expedited categories, due to the vulnerability of the participants and the potential for their situation to influence their decision-making capacity, a complete review by an Institutional Review Board (IRB) would be necessary. This type of review is comprehensive and involves multiple members of the IRB to ensure the safety and ethical treatment of participants. It would address informed consent, confidentiality, and strategies to mitigate any potential risks to the participants.