Final answer:
The highest level of communication (level 1) involves in-depth discussion and analysis of complex topics.
Step-by-step explanation:
The highest level of communication (level 1) is characterized by in-depth discussion and analysis of complex topics. At this level, individuals engage in thoughtful conversations, exploring multiple perspectives, and exchanging detailed information. This level of communication often involves critical thinking, problem-solving, and the ability to articulate ideas clearly and effectively.