What kinds of sources can lead to an explosion?

The correct answer highlights the various types of changes that can lead to an explosion. An explosion often results from rapid releases of energy that create a shock wave, and these events can stem from different kinds of changes. Chemical changes can lead to explosions through reactions that generate gases or heat at a rapid rate, potentially causing a significant pressure increase. Physical changes can also be explosive, such as the rupture of a pressure tank where gases expand suddenly. Atomic changes, although less common in laboratory settings, refer to nuclear reactions that can result in explosive releases of energy. Therefore, including all three types—chemical, physical, and atomic—illustrates a comprehensive understanding of explosion sources.

Other options are limited to specific scenarios which do not encompass the range of possible explosive events. For instance, focusing solely on chemical changes, pressure tank ruptures, or enclosed reactions misses the broader context of potential hazards and is indicative of a narrow understanding of explosion sources.