The focus or unit of analysis in Systems Theory is the whole system and its parts. It aims to understand an individual or situation as a whole of its parts, not just one individual factor. The theory emphasizes the relationships between and within the whole system. In the context of the document you're studying, this focus is a fundamental aspect of Systems Theory. It underscores the importance of considering all parts and their interactions within the system when trying to understand a problem or a situation. This approach allows for a more comprehensive understanding, which can then lead to more effective solutions. It's not just about understanding the individual parts, but also about how they interact and influence each other within the system