What do the following statements describe? - It is part of the larger set of diagram types - It is simpler to use than other industry recognised systems - It shows the process in a way that allows users to easily validate models

The statements provided in the question describe BPMN (Business Process Model and Notation). BPMN is a widely recognized method for modeling business processes, distinguished by its ability to provide a clear, visual representation of business workflows that is easy for stakeholders to understand.

The first statement indicates that BPMN is part of a larger set of diagram types. This is true, as BPMN includes various symbols and models that fit into a broader context of process modeling tools and methodologies.

The second statement highlights BPMN's user-friendliness compared to other systems. This is significant, as BPMN was specifically designed to be accessible to all stakeholders—including business analysts, technical developers, and business users—making it simpler to communicate complex processes without needing extensive technical expertise.

The third statement about BPMN allows users to validate models easily underlines its strength in facilitating collaboration and ensuring accuracy. BPMN employs standardized symbols and notation, which helps to avoid ambiguity and supports effective validation processes among different stakeholders involved in a project.

In summary, BPMN's accessibility, ease of use, and validation capabilities make it the appropriate response to the descriptions provided.