Does every project have to undergo both annual and triennial reviews?

The correct choice indicates that the requirement for annual and triennial reviews of projects is dependent on specific factors. In IACUC regulations, not every project is mandated to undergo both types of review regardless of the circumstances.

For instance, considerations such as the nature of the research, the species being studied, the potential risks involved, and the specific funding sources may all influence the need for these reviews. Projects involving less risk or certain types of non-vertebrate species may have different review requirements, thus highlighting the flexibility within the regulatory framework. Additionally, certain funding sources may impose additional review requirements, but not all projects will be subject to the same standards.

This nuanced understanding allows for a tailored approach to animal research oversight, ensuring that project reviews are appropriate to the risks and ethical considerations presented by the specific research.