The answer should be RAM = Random Access Memory
RAM memory is used to store current data while the computer is on. Bear in mind that after the computer is shutdown all data in RAM is lost.
Operating System (OS) is the answer.
An application runs in/on an OS. It is not the OS itself. Like Word or Chrome are applications.
Systems is too generic and not specific enough to mean anything in this context. Throw away answer.
Network Operating System does not 'usually' run on a hard drive but on memory chips in things like routers, wireless access points and switches that move network traffic.
Answer: Use the Design view
Explanation: Using a Design view to modify a report is the most flexible way to modify a report as opposed to a layout view which is another way to modify a report . The design view is flexible in the sense that it provides a more outlined structured view of your report that you can see the header and footer for the report. it also affords you the ability to control your report in terms of changing many properties, adjusting images, labels and editing text box, etc.