Why do you think that spending money on others makes people happier?

Because, it make them feel thought about.

hope this helps you!  :)

How people spend their money may be at least as important as how much money they earn. Specifically, spending money on other people may have a more positive impact on happiness than spending money on oneself. Providing converging evidence for this hypothesis, it is found that spending more of one’s income on others predicted greater happiness both cross-sectionally (in a nationally representative survey study) and longitudinally (in a field study of windfall spending).

Participants who were randomly assigned to spend money on others experienced greater happiness than those assigned to spend money on themselves.

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Ithink the answer is b