Which finding best illustrates neural plasticity?

• A. Reorganization of neural pathways after environmental enrichment
• B. Growth of only brainstem neurons
• C. No change in neural connections with training
• D. Uniform brain maps across individuals

Answer: (A)

Neural plasticity is the brain’s ability to change its wiring and function in response to experience. Reorganization of neural pathways after environmental enrichment shows this adaptability in action: when the environment provides more cognitive and sensory stimulation, neural circuits reorganize—synapses can be strengthened or pruned, new connections form, and cortical maps can shift to reflect the new experiences. This illustrates how experience shapes structure and processing in the brain. The other options don’t fit this idea: growth of only brainstem neurons isn’t about flexible, widespread network changes; no change in neural connections with training contradicts the idea of learning-driven adaptation; and uniform brain maps across individuals would imply no experience-driven differentiation, not plasticity.