According to social exchange theory, even if someone is in a good relationship, he or she would be likely to leave if he or she has a:

It should be based on the worth of the relationship, Although logic would tell us that negative worth means to leave the relationship, and positive worth means to stay in the relationship.

Explanation:

Social exchange theory is a sociological perspective and social-psychological that explains the social stability and change as a procedure of negotiation exchange between two parties.

Social exchange theory says Human relationship are built by the subjective cost and its benefits analysis and the comparison of alternatives.

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.