Final answer:
IRB approval is required for consent forms used in research with human subjects as they are pivotal for ensuring participants are well-informed and voluntarily consenting.
Step-by-step explanation:
According to guidelines set by an Institutional Review Board (IRB), certain recruitment materials require IRB approval before they can be used in research involving human subjects. Among the listed options, the material that must receive IRB approval prior to use is the consent forms. Consent forms are crucial for ethical compliance as they ensure participants are fully informed about the study, its risks, benefits, and the voluntary nature of their participation. This informed consent process is a cornerstone of ethical research practice, especially when the research involves human participation. Job advertisements, interview questions, and employee handbooks are not typically subject to IRB review unless they are part of the research protocol involving human subjects.