What is the perimeter of a rectangle with length 5 and width 3?

To find the perimeter of a rectangle, you can use the formula:

Perimeter = 2 * (Length + Width).

In this case, the length is 5 and the width is 3. Plugging those values into the formula gives:

Perimeter = 2 * (5 + 3) = 2 * 8 = 16.

Therefore, the perimeter of the rectangle is 16. This is why the choice of 16 is the correct answer for the perimeter of this rectangle.

The other options do not reflect the accurate calculation based on the dimensions provided, showing a misunderstanding of how to compute perimeter or incorrect addition of length and width.