Researchers have found that couples who are happy in their marriages make very different attributions for their partners' behaviors than couples who are unhappy. specifically, couples in happy marriages make while couples in unhappy marriages make

You didn't list the options to choose from but I found them elsewhere.

The answer is - couples in happy marriages make external attributions for negative behavior and internal attributions for positive behavior; while couples in unhappy marriages make internal attributions for negative behavior and external for positive. Happy couples blame outside forces for issues whereas unhappy couples blame each other.

answer; (d) anthropology;

the answer is:

c. economic output