Which factor is enhanced by a diverse IRB in terms of ethical review process?

A diverse Institutional Review Board (IRB) enhances the quality of ethical consideration in the review process because it brings together individuals from various backgrounds, expertise, and perspectives. This diversity allows for a more comprehensive evaluation of research proposals, as members can contribute unique insights and identify potential ethical issues that may not be apparent to a more homogenous group.

Incorporating diverse viewpoints ensures that the ethical implications of research are considered from multiple angles, including cultural, social, and contextual factors. This leads to more thorough discussions about the potential impact of research on different populations, ultimately fostering a more ethical approach to research design, participant treatment, and the potential societal implications of research findings.

The other options, while important in their own right, do not directly relate to the enhancement of ethical consideration. Speed of proposal approvals may not necessarily improve with diversity, as increasing the number of viewpoints can sometimes lengthen discussions. The number of proposals submitted is more reflective of the research environment than IRB diversity. Lastly, funding sources may vary independently of the IRB's composition, and enhancing ethical consideration is a primary goal rather than a means to secure funding.