Shawn's sister-in-law always has a smile on her face and a joke to tell. the moment she walks into shawn's house he starts smiling, even before she says something funny. this is not caused by:

a. automatic mimicry.

b. mood linkage.

c. chameleon effect.

d. individualism

D. individualism

Explanation:

The individualism approach is focused on one's own ability to care for themselves that they put ahead what is best for them so it is about pursuing your own path whilst also accomodating others in your long term goal.

So this has nothing to do with making someone smile when you get into the house.

But all other terms can be a cause for thsis

Chameleon effect means you are able to unconsciously imitate other people's expressions or gestures.

Mood Linkage means we get affected by other people moods whether they are sad or happy or funny like Shawn who affect his sister by being a funny brother who always has a smile and his sister is now affected by it and find herself smiling too at the sight of Shawn.

Automatic mimicry is also our unconscious ability to imitate others such as their expressions