If ratings are not desired, what type of appraisal might provide acceptable performance with lower investment?

The correct choice of appraisal type when ratings are not desired and acceptable performance is sought with a lower investment is self-assessment. A self-assessment allows an organization to evaluate its own processes and practices internally, which typically requires fewer resources and less formal structure than an external appraisal or evaluation.

In this context, self-assessment focuses on gathering insights and feedback from within the organization, making it cost-effective and less intensive, especially if there's no need for external validation or precise rating outcomes. It encourages team involvement and a clearer understanding of current capabilities without the potential stress and rigor of formal evaluations or appraisals.

Other options such as evaluations or full appraisals often involve structured processes that typically demand more time, resources, and external involvement, which may not align with the need for a less intensive approach. Benchmark appraisals usually compare the organization to others, which could also require significant investment in terms of time and resources, contrary to the goal of minimal investment.