Which of these is most important to include in a summary of this article?
A. Laughter has been shown to have positive effects on
physical and mental health as well as on relationships.
B. Laughter produces endorphins in the body, which in
turn can reduce pain.
C. Telling jokes invites others to laugh along, which is
important to strengthening interpersonal relationships.
D. Injecting humor into homework may accelerate
learning and improve understandi
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