The following three coverages are required on every policy insuring loss by fire.

The correct choice emphasizes the specific coverages that are universally required in policies insuring against loss due to fire. Fire, lightning, and explosion of natural, coal, or manufactured gas form a critical triad of protections that address common and significant risks associated with fire-related incidents.

Fire coverage protects the insured property from damage caused by fire, which is a primary concern for most insured locations. Lightning coverage adds an additional layer of protection, specifically addressing damage that can result from lightning strikes, which can ignite fires or cause direct damage to structures. The inclusion of explosion coverage, particularly relating to gas types such as natural, coal, or manufactured gas, is vital due to the potential for intense and hazardous explosions that can arise from unsafe gas handling or plumbing failures.

This trio of coverages reflects the broad spectrum of fire-related risks and is foundational in property insurance, ensuring that policyholders are protected against a variety of related perils that can occur either independently or in conjunction with one another. Other options, while they may include some of these elements, do not encompass the essential combination required by all policies insuring loss by fire.