Answer:
The correct option is A. Your best friend just won the lottery. even though you may experience envy, you also cannot help feeling excited along with him because you are both grinning from ear to ear. this reaction supports the facial-feedback hypothesis regarding the origin and intensification of emotion.
Step-by-step explanation:
The facial- feedback hypothesis puts up the theory that our facial expressions and facial muscles play a huge role in our emotional feelings towards any circumstance. Like in this question, the person is feeling excited for his best friend because he is grinning in front of his best friend. Even though he has envious feelings towards the lottery but he cannot help being excited because he has to grin in front of his friend at that time.