Question

after a limb is amputated, it stops sending signals to the somatosensory cortex. when this happens, the somatosensory cortex can change. this type of change often happens in people who have phantom pain. so, some scientists hypothesize that changes in the somatosensory cortex cause phantom pain.
select the sentence in the text below that provides the best evidence that changes in the somatosensory cortex may cause phantom pain.
scientists try to develop medical treatments that reverse the changes in a patient’s somatosensory cortex. when the treatments reverse the changes, the somatosensory cortex goes back to the way it was before the amputation. in some patients, treatments that reverse the changes in the somatosensory cortex also stop or reduce phantom pain. however, the effects of these treatments are not the same for everyone. scientists need to do additional studies to determine whether changes in the somatosensory cortex cause phantom pain.

Explanation:

The sentence provides direct evidence linking changes in the somatosensory cortex to phantom pain by showing that reversing these cortical changes can stop or reduce the pain, which supports the hypothesis about the cortex's role in phantom pain.

Answer:

Scientists try to develop medical treatments that reverse the changes in a patient's somatosensory cortex. When the treatments reverse the changes, the somatosensory cortex goes back to the way it was before the amputation. In some patients, treatments that reverse the changes in the somatosensory cortex also stop or reduce phantom pain.