Which statement best describes the rationale for using animals in biomedical research, as given in the material?

• A. They are identical to humans.
• B. They are similar to humans in reactions and responses due to similar biology.
• C. They are useful only for basic teaching.
• D. They completely replace the need for human trials.

Answer: (B)

Rationale rests on the fact that many biological processes are conserved across mammals, so animals show reactions and responses that can model human physiology. This similarity lets researchers study disease mechanisms, assess safety and toxicity, and predict how a drug or intervention might behave in people before clinical trials. It’s important to note that animals are not identical to humans, so findings must be interpreted with caution and supplemented by other data. Using animals is not limited to basic teaching; they play a central role in translational research. And animal studies do not completely replace human trials, since confirmation of safety and efficacy in people is still essential.