Which methods guarantee that a thread will leave the running state解决方案

Which methods guarantee that a thread will leave the running state
Which methods guarantee that a thread will leave the running state? 

(a) yield() 

(b) sleep(1000) 

(c) aLiveThread.join() 

(d) wait() 

(e) notify() 

(f) notifyAll() 


[解决办法]
a b d
[解决办法]
呵呵，估计是哪个公司的笔试题吧