ebs 수능열기 23페이지에 있는 다음의 문장( 2010년 수능문제 )에서,

although a speech can be effective, all the words in the world cannot measure up to the example of a leader, especially in communicating new behaviors and values. there is often no more effective way to help people understand the message than to have it modeled for them by the manager. words can yield a variety of interpretations in terms of the kind of behaviors people think they mean. but a manager’s actions provide a clear model of exactly the kind of behavior required. managers who want people to take a more team-based approach with their people, for example, will almost certainly get better results by taking a more team-based approach themselves rather than just by making a speech on teamwork.

they 가 의미하는 것은 무엇인가요 ?
behaviors 인가요 ? 아니면 words인가요?
자료마다 서로 다른 주장을 하고 있어서요.