Which statement best captures the stated strengths of animal research?

• A. Large sample sizes
• B. Relatively small and easy to handle; short gestation periods; similar brain structures to humans
• C. They always perfectly replicate human biology
• D. They have no ethical concerns

Answer: (B)

Animal research is valued for practical feasibility and biological relevance. Being relatively small and easy to handle makes it possible to house and control many subjects in a lab, which supports well‑controlled experiments. Short gestation periods allow rapid breeding and quicker data collection, helping researchers build larger, time-efficient samples. Additionally, many mammals share similar brain structures and basic neurochemical systems with humans, so findings about brain function in animals can inform our understanding of human biology. Together, these aspects are commonly highlighted as the main strengths of using animal models. The other options don’t fit as well: large sample sizes aren’t unique to animal work and aren’t the defining point; no model perfectly replicates human biology; and ethical concerns do exist in animal research.