Answer:
Sandra can conclude that there may be a link between closeness with family and happiness.
Step-by-step explanation:
B. Closeness with family is the only factor that contributes to happiness.
it isn't B because that not what you get from the data collected.it says it makes them happy;not that it is their only factor of happiness.
C. Closeness with family results in happiness.
it isn't C because she can't conclude that this is true based on the data she collected because she only surveyed 500 people
D. Happiness results in closeness with family.
it isn't D because just because you are happy doesn't mean that you are close to your family . Also this is not what you get from the data she collected. It says 85% say that positive relationships with family members make them happy.