Final answer:
Ambiguities in the reuse of waste refer to the complexities and challenges in repurposing waste materials, which can present environmental, health, and economic considerations.
Step-by-step explanation:
The generalization that Schulz and Goldstein are referring to is likely c) Ambiguities in the reuse of waste. This concept refers to the complexities and challenges that arise when trying to repurpose waste materials for the same or new functions. The economic and environmental benefits of reuse may be significant, with new packaging regulations aiming to facilitate this process. One notable example of reuse is in water resource management, where treated wastewater can serve various purposes apart from drinking. However, the implications and consequences of this generalization may include the difficulty in assessing the full environmental impact of reusing certain materials, potential health risks if not managed correctly, and the economic costs and benefits associated with implementing reuse programs.