What was the resolution of the earliest graphics cards?

Match the following navigation shortcuts with their actions:

I. Right arrow II. Page Down III. Home IV. End V. Ctrl + Home A. Moves active cell down one screen B. This does nothing by itself C. Moves active cell to column A, row 1 D. Moves active cell to column A in that row E. Moves right one cell in the same row

____ speed is measured in hertz.?

A. ?Clock B. ?Printer C. ?Word D. ?Swap file