A thread becomes not runnable when

Question

[A] its sleep method is invoked

[B] the program terminates

[C] a network connection is established

[D] an event occurs

Answer & Explanation
Option: [A]

A thread becomes not runnable when any of the following conditions satisfied:

(i) If sleep method is invoked

(ii) The thread calls the wait method to satisfy some specific conditions

(iv) The thread is blocking on I/O.