A document is copied from the hard drive $($storage$)$ to $q,$ when you open it$.$ When you close a document, ifts removed from $q,$ and saved to the hard drive. Select your answer, then click Done.

$($A$)$ the cloud

$($B$)$ the CPU

$($C$)$ random access memory $($RAM$)$

$($D$)$ read$-$only memory $($ROM$)$

Done

MacBook Pro