Answer:

1.A modifier key is a special key on a computer keyboard that modifies the normal action of another key when the two are pressed in combination.

2.Using keyboard shortcuts to work your browser

Start your internet browser –

"Windows" key + "I"

New window (once your browser is open) – "Ctrl" + "N"

New tab – "Ctrl" + "T"

Move to next tab – "Ctrl" + "Tab"

Move to previous tab – "Ctrl" + "Shift" + "Tab"

Close tab – "Ctrl" + "F4"

Close browser window – "Alt" + "F4"

#Hope It Help