Office automation systems focus on managing documents, communicating, and scheduling. The correct option is D.
An office automation system is a tool from which data can be transferred from one system to another system without using manpower, or without human interventions. Examples are slack, Zoom video calls, Microsoft video calls, etc.
They are used to analyze, collect, and share data. They manage tasks easily, they also manage business process management software.
Thus, the correct option is D. office automation systems.
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