Smiling when happy seems to be an expression common to all human societies, suggesting that this behavior is probably
A) based on social standing.
B) genetic in origin.
C) altruistic.
D) learned.

Question

Quizplus · Accepted Answer

Smiling when happy is a universal human behavior, suggesting it is likely genetic in origin rather than learned or based on social constructs. This is because it is observed across all human societies, indicating a common biological basis rather than something that is taught or varies significantly with social standing or altruistic intentions.

Smiling When Happy Seems to Be an Expression Common to All