Final answer:
User Interface (UI) Analysis involves studying and evaluating the design and functionality of user interfaces. It includes activities like observing existing systems, interviewing customers, and examining user interfaces of similar products. However, it does not involve studying user manuals of existing systems to find out the functional requirements.
Step-by-step explanation:
User Interface (UI) Analysis is the process of studying and evaluating the design and functionality of user interfaces. It involves several activities, such as observing existing systems, reviewing user manuals, conducting interviews with customers, and examining user interfaces of similar products.
However, out of the options provided, UI Analysis does NOT include studying user manuals of existing systems to find out the functional requirements. Instead, it focuses on understanding the needs and preferences of users and identifying the functional requirements through other means.