Final answer:
Videoconferencing systems are communication systems. Oil Spill Advisor is an environmental management system. Accounting systems are business process systems.
Step-by-step explanation:
Among various types of information systems, videoconferencing systems fall into the category of communication systems. These systems enable real-time audio and video communication between people who are in different locations.
Oil Spill Advisor, on the other hand, is an example of an environmental management system. It helps in monitoring, managing, and mitigating the impact of oil spills on the environment.
Lastly, an accounting system is a type of business process system. It is used for recording and managing financial transactions within an organization.