Overtime, groups of people who interact regularly can become increasingly similar in terms of body weight, smoking habits, and even happiness. This increased similarity is likely due to ____________.

Overtime, groups of people who interact regularly can become increasingly similar in terms of body weight, smoking habits, and even happiness. This increased similarity is likely due to ____________.

Overtime, groups of people who interact regularly can become increasingly similar in terms of body weight, smoking habits, and even happiness. This increased similarity is likely due to ____________.



a. genetic factors

b. social contagion

c. set point changes

d. coincidence



Answer: b


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