Please choose the correct answer to the question: A man plugs his television into an outlet behind a cabinet. He sees that the television may now be turned on so that he can watch his favorite show. The man knows that by hooking the t.v. cord into the outlet

Answer1: he completed a lap Answer2: he made a good deal Answer3: he invented new circuits Answer4: he completed a circuit

Answer format: answer1/answer2/answer3/answer4
Answer: answer4