Final answer:
Sustainability in business is true to managing the firm's triple bottom line, which encompasses environmental, social, and economic aspects to ensure responsible operation and resource management.
Step-by-step explanation:
The assertion that sustainability is concerned with managing a firm's triple bottom line is True. The triple bottom line refers to the three pillars of sustainability: environmental protection, social equity, and economic viability. Businesses focusing on sustainability aim to operate without depleting resources, maintaining an equilibrium between environmental responsibility, social fairness, and economic growth.