The correct answer is Ctrl + =.A subscript is a number, figure, symbol, or indicator that is smaller than the normal line of type and is set slightly below it.For ex- Formula of Carbon Dioxide is CO2.The shortcut key to create subscript in MS-Word is Ctrl + =.A superscript is a number, figure, symbol, or indicator that is smaller than the normal line of type and is set slightly above it.For ex- ion of sodium is Na?+1.For superscript, press Ctrl, Shift, and the Plus sign (+) at the same time.Additional Information ShortcutPurposeAlt + SInsert the current date.Alt + =Create the formula to sum all of the above cellsCtrl + SSave