Spoilage coverage under the B and M policy must result from which of the following?

Spoilage coverage under the Business and Manufacturing (B and M) policy specifically addresses losses that result from the failure of temperature-controlled environments where perishable goods are stored. This type of coverage is typically triggered by conditions such as lack of power, light, heat, steam, or refrigeration, which can lead to spoilage of food and other perishable items. The rationale behind this is that these conditions directly impact the maintenance of the necessary environment for preserving goods, and when they fall short, spoilage occurs.

In contrast, while floods and fires can certainly cause other types of property damage, they are not the specific triggers for spoilage coverage within the B and M policy. Also, defective manufacturing processes, while potentially leading to product loss, do not fit under spoilage coverage, as the coverage is related to external environmental factors rather than internal processes. Lastly, limiting spoilage coverage to natural disasters alone would not be accurate, as spoilage can occur from more everyday circumstances such as power outages, which do not fall under the category of natural disasters. Hence, lack of or excess power, light, heat, steam, or refrigeration is the correct circumstance that establishes spoilage coverage under this policy.