Final answer:
The correct answer is C. facial feedback hypothesis. Smiling can make someone feel happier.
Step-by-step explanation:
The correct answer to the question is C. facial feedback hypothesis.
The facial feedback hypothesis suggests that our facial expressions can actually affect our emotional experience. According to this theory, smiling can make someone feel happier. When we smile, even if we force it, our facial muscles send signals to our brain that trigger the release of endorphins, which are chemicals that promote feelings of happiness and well-being.
This theory is supported by research. For example, studies have shown that when participants were asked to hold a pen between their teeth to mimic a smile, they reported feeling happier than those who held the pen with their lips, which mimicked a frown. Similarly, people who underwent Botox injections that paralyzed their frowning muscles reported less depression.