For this one I would say C.) Work Breakdown Structure
To copy cell contents, you can select the cell and then press the CTRL + C keys.
They act as a sort of a shortcut, so you don't have to select, right click and then choose copy.
Answer
program that, after being initially loaded into the computer by a boot program, manages all of the other application programs in a computer. The application programs make use of the operating system by making requests for services through a defined application program interface (API). In addition, users can interact directly with the operating system through a user interface such as a command line or a graphical user interface
B.how fast the compressor starts to work
Answer:
In a web browser, the address bar (also location bar or URL bar) is a GUI widget that shows the current URL. The user can type a URL into the bar to navigate to a chosen website.
