The correct answer is A) 3 feet or 1 yard
Step-by-step explanation:
Yards and feet are both units used to measure length or distance in the same way as meter or centimeter. Additionally, a foot measures a shorter length or distance than a yard, indeed 3 feet are equivalent to 1 yard or 3 ft = 1 yd. This implies in the case presented the longest least at Love My Pet that is 15 feet is equivalent to 5 yards. This can be explained using the rule of three as
1 yard = 3 feet
x = 15 feet
1 yard x 15 feet / 3 feet = 5 yards
Additionally, as the leash you found is 5 yards or 15 feet but you need one of 6 yards or 18 feet (3 x 6 = 18 yards), the leash you need is 3 feet (18 feet -15 feet = 3 feet) or 1 yard (6 yards - 5 yards) longer.