which of the following is an example of subjunctive

If I knew, I'd tell you.

It's important that you know.

https://www.englishclub.com/grammar/subjunctive.htm

@Writeteacher, please help students instead of state the obvious. thank you have a okay day

To determine which of the following is an example of the subjunctive, it would be helpful to know the options provided. Could you please provide me with the options, so I can assist you in identifying the correct example of the subjunctive?