Marcus Green Exam 2 Question 22 On threads

[Govinda Agarwal]

Question 22)
What can cause a thread to stop executing?
1) The program exits via a call to System.exit(0);
2) Another thread is given a higher priority
3) A call to the thread's stop method.
4) A call to the halt method of the Thread class
The Answer given is :
Answer 22)
1) The program exits via a call to exit(0);
2) The priority of another thread is increased
3) A call to the stop method of the Thread class
I think only 1 should be the correct answer.
Pls Help

[ramani2020]

I think options 1,2 and 3 are correct.
Ramani.

[Marcus Green]

Note that the question says what CAN cause a thread to stop executing, not what always will cause a thread to stop executing.
Marcus