Which function is used to add a range of cells?
A) =SUM
B) =AVERAGE
C) =MAX
D) =ADD

The answer is "Option A" because it is used for adding the range of the cell, and the further explanation can be defined as follows:

The wrong solution can be defined as follows:

Therefore "Option A" is the correct choice.

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Excel function: link

Sum

Sum a range of cells -- SUM Function

The quickest way to sum a range of cells is to use the AutoSum button. It automatically enters a SUM function in the selected cell. The SUM function totals one or more numbers in a range of cells.

Explanation:

a.s= 230t– 110; 1500 lbc.t= 230s– 110; 1500 lbb.s= 230t+ 110; 1720 lbd.s= 199t– 110; 1280 lb