Can anyone explain how threads and schedule are works in OS?

Question

https://www.sololearn.com/post/146822/?ref=app

Answer 1

as I know There is a cycle in the precedence graph - so the given schedule is not Conflict Serializable. 

If a schedule is view serializable but not conflict serializable it MUST have one or more blind writes. Here, there is no blind writes. So, the given schedule is not even view serializable. 

but I didn't able to decide is this answer is accurate or something else is the answer

Answer 2

Schindlabua David Carroll can you help in this how this thread are working over here?

Answer 3

No clue, you are on your own there.

Answer 4

The question is about precedence graph and serializable property of thread