The main theme of the given scenario is 2) Parenting styles.
In the scenario, there are multiple instances where different characters have conflicts or disagreements over how to raise a child or what values to prioritize.
Arwen and Callen fight over Callen's behavior, which can be seen as a conflict over discipline and parenting approaches. Gram and Mama argue over the best way to raise Skye, indicating a difference in their parenting styles.
Skye and Mama disagree about the value of responsibility vs. fun, which can be seen as a clash of their parenting philosophies. Skye and Gram disagree over the benefits of broccoli, highlighting their different approaches to nutrition and health.
All of these conflicts and disagreements revolve around the topic of parenting styles, which is the main theme of the scenario.