What are the three primary effects of an explosion?

The three primary effects of an explosion are fragmentation, blast, and incendiary (thermal) effects.

Fragmentation refers to the shrapnel and debris produced by the explosion, which can cause injury or damage over a wide area as these fragments are propelled at high speeds.

The blast effect is the powerful pressure wave created by the sudden release of energy during an explosion, capable of causing significant destruction to structures and injuring individuals who are within proximity.

The incendiary (thermal) effect involves the intense heat generated by the explosion, which can ignite fires and cause burns to people and damage to materials. This thermal energy extends the danger of an explosion beyond its immediate impact zone as it can ignite combustible materials nearby.

While the other options include relevant concepts, they do not encompass all three primary effects as comprehensively or accurately as fragmentation, blast, and incendiary. For instance, one option might mention a pressure wave, which is related to the blast but does not separately identify the incendiary impact, making it less complete.