Please choose the correct answer to the question: An environmentalist heats their home by using a corn stove. The environmentalist knows that heating this way releases carbon dioxide back into the air, but is unworried about is as a result of

Answer1: it promoting plant growth Answer2: corn is too dangerous Answer3: corn is actually evil Answer4: corn grows under the water

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