The correct answer is C) 0.03.
1 square yard is a square whose sides are all 1 yard in length. 1 yard = 3 feet, so each side of this square is 3 ft; this gives us 1 yd² = 3(3) = 9 ft². This gives us 15/9 = 1.67 yd²/min.
1 minute = 60 seconds; this gives us 1.67*60 = 0.027 ≈ 0.03 yd²/sec
