The teacher told all the students that listening was key, it was the main way they would gain what?\nOptions:\n- empathy\n- anxiety\n- knowlege\n- falling down\n- hear things
Let's think carefully first. Step-by-step reasoning process:
User
Knowledge requires understanding and knowing many topics and concepts. One can acquire good amount of knowledge if one listen to teachers carefully. So the final answer is knowlege.
Assistant