what is the quick key to highlighting a column?\no ctrl + down arrow\no ctrl + shift + down arrow\no right…

Brief Explanations:

In spreadsheet - like applications, to highlight a column quickly, the combination Ctrl + Shift + down - arrow is used. It selects the entire column from the active cell downwards. The other combinations have different functions. Ctrl + down - arrow moves to the last non - empty cell in the column. Right - click + down - arrow is not a standard key combination for column selection. Ctrl + Windows + down - arrow is related to window management in Windows and not for column selection.

Answer:

Ctrl + Shift + down arrow