An ontology Please choose the best answer below: Is the common language and intellectual foundation for grouping information with a related theme according to the use case postconditions Is the result of experiencing an emergent behavior that is not part of the system Defines the basic terms and relations comprising the vocabulary of a topic area as well as the rules for combining terms and relations Is the best way to identify system elements that exist outside the system boundary States the needs for the system to perform a task, action, or activity in order for the system to satisfy an overarching operational requirement