Which of the following is the best example of neuroplasticity? cells from the hippocampus are instrumental in encoding memories. neurons that are transplanted from the auditory cortex to the visual cortex begin to perceive light. the 3-year-old’s brain is approximately three-fourths of its adult size. fetal brains grow quickly, increasing in weight over the course of pregnancy.

Neurons that are transplanted from the auditory cortex to the visual cortex begin to perceive light.

Explanation:

Neuroplasticity is the ability of the brain to change through like, that means that the neurons "can learn" new abilities or duties depending in the place that they are.

In this case, the neurons from the auditory cortex that the main function is to detect noises and make the differences from one to another. Suddenly  are placed in another tissue, in the visual cortex, and since this place has a different characteristic (perceive light) the neurons "learn" how to develop the new task.