Final answer:
The fight-or-flight response is the best way to describe being confronted by an intruder who has broken into your house late at night.
Step-by-step explanation:
The best way to describe being confronted by an intruder who has broken into your house late at night is the fight-or-flight response. This response is a set of physiological and psychological reactions that prepare you to either fight off the threat or flee from it. It is a natural survival mechanism that triggers a surge of hormones and physiological changes to help you deal with the danger.