Why are facial expressions culturally universal?

Hello. The answer to your question is simple!

By virtue of their biological origins (1⇓–3), facial expressions have long been considered the universal language to signal internal emotional states, recognized across all cultures. ... Like a generative grammar (19, 20), we randomly generated all possible three-dimensional facial movements (see Movie S1 for an example)

Explanation:

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answer; /// the correct answer is (belongingness needs; good luck

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