Select the meaning of the underlined word in the sentence.
The patient was emotionally labile, showing exaggerated changes in mood from one moment to the next.

Labile means “volatile or unstable.” Someone who is emotionally labile will have drastic changes in mood from one moment to the next.
The stock market has been labile as of late, going up and down drastically.
Angry is incorrect because someone who is emotionally labile may be angry sometimes, but their emotions change dramatically.
Feverish is a trap answer because it is the definition of a similar-sound HESI vocab word, febrile.
Stable would be the opposite of volatile.