Final answer:
An investigator is required to keep consent documents, IRB correspondence, and research records for 3 years.
Step-by-step explanation:
An investigator is required to keep consent documents, IRB correspondence, and research records for 3 years.
Consent documents are signed by individuals before participating in experiments. IRB (Institutional Review Board) correspondence refers to communications and approvals from the board that oversees research ethics. Research records include data, documents, and other materials generated during the course of the study.
Keeping these records for an appropriate amount of time ensures that research can be reviewed, replicated, and verified, if necessary.