To find the perimeter of a rectangle, you use the formula:
Perimeter = 2 (length + width)
Given that the length of the rectangle is 10 feet and the width is 6 feet, you can plug these values into the formula to calculate the perimeter:
Perimeter = 2 (10 ft + 6 ft)
Perimeter = 2 * 16 ft
Perimeter = 32 ft
So, the correct answer to the question is D. 32 ft.