Correct trigger or condition

I’m creating a graded software simulation using Test Mode that has the following buttons below. What trigger or condition do I need to use in Storyline so that it doesn't read or accept the answer as correct or incorrect when users accidentally click the Submit button after clicking the Audio button to listen to the audio again?

• Submit button - When clicked, it allows users to submit their answer
• Audio button - When clicked, it allows users to listen to the audio again.