Directions: Look at the underlined part of the sentence. Below the sentence are given three possible substitutions for the underlined part. If one of the possible substitutions is better than the underlined part, indicate it as your answer. If none of the substitutions improves the sentence, indicate (4) as your answer.

A man with severe brain damage regained the ability to talk, eat, and move after doctors have implanted an electrical device deep inside his brain.