Final answer:
According to the systems viewpoint, the types of inputs suitable for a computer system include data, information, and knowledge. Data is the raw input that when processed becomes information, which can then be understood and used as knowledge.
Step-by-step explanation:
From the systems viewpoint, the three types of inputs that a system can have are most accurately described by option 1) Data, information, and knowledge. This is because in a computer system, data represents the raw facts that are devoid of context until they are processed. When data is processed and given a meaning, it turns into information. This information, when further interpreted, understood, and applied by users, facilitates the creation of knowledge, which can then be used for decision-making, problem-solving, and a wide array of cognitive tasks. For example, when we use a computer to perform a task such as word processing or solving an equation, we provide input in the form of data, which the computer processes into information that we can use to generate the knowledge needed for that particular task.