What is the primary purpose of the "3 Rs" concept from Russell and Burch?

The "3 Rs" concept, introduced by Russell and Burch, stands for Replacement, Reduction, and Refinement, and is primarily aimed at addressing ethical concerns related to the use of animals in research. The purpose of this concept is to guide researchers in minimizing the number of animals used in experiments (Reduction), replacing animals with alternative methods wherever possible (Replacement), and refining experimental techniques to minimize pain and distress for the animals (Refinement).

Choosing the option that focuses on decreasing animal use and minimizing pain directly aligns with the core objectives of the "3 Rs." This approach not only prioritizes the welfare of animals involved in research but also encourages the development of more humane research practices. In this context, the focus is on protecting animals while still allowing for valuable scientific inquiry, making it a pivotal principle in the ethical conduct of research.

In contrast, options emphasizing increasing species variety, improving living conditions, or enhancing accuracy of testing methods do not fully encapsulate the foundational intent of the "3 Rs." While they may be related to ethical considerations in research, they do not specifically address the fundamental aim of reducing animal use and minimizing distress, which is central to Russell and Burch's framework.