Voice. voice uses the least bandwidth
project management... we use this software to plan and schedule event and resources.
It's D because a checklist is to help you organize a list of things like groceries, homework etc. It can sperate indormation..for example, homework need to be separated so we won't messed up on which is which. It can also portray information clearly because you're making a check list.
Answer:
the answer is going to be printer