Ans
The correct answer is (D) "The 2 represents the two sets of length and width pairs."
In the formula for the perimeter of a rectangle, 2(l+w), the 2 represents the fact that the formula is calculating the sum of two pairs of sides: the length and the width. Each pair consists of two sides, so there are two sets of pairs that need to be added together to get the total perimeter.
Therefore, the 2 represents the two sets of length and width pairs.wer: