Answer: D) How gender roles are learned at home.
Explanation: As mentioned in the question, the situation is describing about the learning of gender roles that is played by a male and female in general at home. Smiths are giving the job of lawn and vehicle maintenance to their son while girls receive the task of making meals and house cleaning.
This job allotment is based on the traditional ways in which society divides the job of male and female accordingly.
Other options are incorrect because there are responsibility can be taught in many different ways rather than based on gender. They are not attending second shift and neither labor is divided between them
Thus, the correct option is option (D).