T1W1 TS Q12 – Selective High School

The spy that sabotaged the submarine had both security clearance and credentials.

If this is true, which of the below sentences must be true?

Gina has security clearance. She sabotaged the submarine. Gina does not have the credentials. She couldn’t have sabotaged the submarine. Gina does not have the credentials. She could’ve sabotaged the submarine. Gina does not have security clearance. She could’ve sabotaged the submarine.

Are you sure you want to leave?

If this is true, which of the below sentences must be true?