Final answer:
The core concept of shared responsibility is most broadly encompassed by Environmental Sustainability, implicating collective action across the global community.
Step-by-step explanation:
The concept of shared responsibility is a core element of several domains, but the one that encompasses this idea most broadly is Option 1: Environmental sustainability. In the context of environmental sustainability, shared responsibility relates to the notion of collective action needed to address the social, political, and cultural challenges of living within the means of the Earth without significantly impairing its function. Responsibility in this domain isn't limited to one actor or group; rather, it means that individuals, communities, companies, and governments all have roles to play in conserving resources, ensuring environmental justice, and laying the groundwork for future generations to have a livable world.
Certainly, business ethics also involve shared responsibility, especially when it comes to corporate practices that affect social and economic issues as well as the management of emerging technologies. Similarly, cybersecurity involves shared responsibility amongst various stakeholders to protect information and infrastructure. Even social justice requires a collective effort to address inequalities and ensure civil liberties for all. However, the integrative, comprehensive nature of environmental sustainability, which requires cooperation across all levels of society and sectors, makes it the most fitting answer.