What condition must exist for bond tests to qualify a primer, paint, and encapsulant?

The condition that necessitates sufficient strength without fire-resistive material emphasizes the importance of the coating's durability and integrity when applied, even in the absence of fire-resistive properties. This means that the primer, paint, or encapsulant needs to have a level of adhesion and resilience to ensure proper performance, regardless of whether fire-resistive materials are present.

In practical terms, the application of coatings without the immediate need for fire-resistive components allows for flexibility in various environments and applications. It ensures that the primary focus is on the resilience and reliability of the coating in adherence and performance. This condition helps validate that coatings can function effectively on their own merit without needing additional materials solely for fire resistance, which may not be applicable in all scenarios.

Each of the other conditions, while relevant in different contexts, does not universally guarantee the qualification of the coatings in question, which is particularly highlighted by option A's focus on the strength properties of the coatings under consideration.