All of the statements provided have some truths associated with them, but if we're to determine which one is most broadly true in relation to the historical context of people moving to suburbs and purchasing automobiles, the following can be noted:
Women were allowed to drive and thereby gained more freedom.
This statement highlights a significant cultural shift that occurred as more families moved to the suburbs and automobiles became widely accessible. Driving allowed women more mobility and independence compared to previous societal norms where their movement was often restricted.
While the other statements have validity in specific contexts (e.g., suburban lifestyles often were wealthier ones, some women did experience isolation, and cities struggled with infrastructure), the empowerment and freedom gained by women through the ability to drive was a notable change during that era.