When discussing the Heinz dilemma, Nancy says, "I would steal the drug, because when they marry, a husband promises to love, cherish, and protect his wife until death do they part. Thus, it is his social responsibility to steal the drug to help his wife." This type of response best fits with the stage in Kohlberg’s model of moral development

Fourth

Explanation:

Kohlberg model of moral development is divided into six stages .

level 1 is preconventional at this stage child does not have its own morality, morality is influenced by external factors like teachers and parents.

it has two stages  

stage one which is obedience and punishment

stage two which is instrumental orientation

level 2 is conventional in which child morality is related to personal and relationship with society. A child readily accepts rules by authority but they think it is necessary to do so to maintain positive relationship in society.

it has two stages

stage 3 which is good boy nice girl orientation

stage 4 which is law and order orientation

we are concerned with this as this is answer to our problem statement

At this stage child blindly follows rules and values without applying his own reasoning to thrive in a functioning society.

since here Nancy is trying to follow societal order wherein, he is supposed to take care of his wife even if it’s meant stealing for her well-being.  

he is blindly following the societal norms and ignoring legal rule and hence fourth is correct answer

level 3 is postconventional is based on own abstract principles and values.

it has two stages

stage 5 is societal contract orientation

stage 6 is ethical principal orientation

in about winter like late november to january